Every community leaves a trace of itself, in stone, in song, in the stories it tells its children, and every trace becomes the heritage that the next generation must choose to keep.

On almost any warm weekend in New Jersey, somewhere a street is closed to traffic. There is a stage at one end and a line of food stalls down the middle, a church choir or a salsa band or a drum circle, children with painted faces, neighbors who have not spoken since last year picking up the conversation where they left it. Nobody at that street fair would use the words community or heritage, and yet both are fully present. The gathering is the community, made briefly visible to itself, and everything that shaped it, the recipes, the songs, the flags, the dances brought from somewhere else and kept alive here, is heritage doing exactly what heritage is for. This piece is about those two words, what they actually mean, how they grew up together, and why some of the world’s most serious institutions exist to defend them. It is a long story, and it begins, as most human stories do, with people deciding to stay in one place.

What we mean when we say community

The word community descends from the Latin communis, meaning shared or common, the same root that gives us common ground and the commons itself. At its simplest, a community is a group of people bound by something they hold in common: a place, a practice, a belief, a story about who they are. Sociologists like to distinguish communities of place, the village or the block, from communities of interest and communities of identity, which can stretch across oceans. But every kind rests on the same foundation, which is that its members recognize one another and feel some obligation to one another that strangers do not share.

Art has been the binding agent from the beginning. At Çatalhöyük in Anatolia, a settlement already crowded nine thousand years ago, families painted the interior walls of their houses with hunting scenes and geometric patterns, and buried their dead beneath the floors so that the ancestors literally underlay daily life. Long before writing, communities used image, ornament, dance and song to say the essential things: this is who we are, this is what we have survived, this is what we owe each other. A shared symbol turns a crowd into a congregation. Anthropologists sometimes describe art as a social technology, and the phrase is apt, because a work made in common, or witnessed in common, produces something no law can produce on its own, which is the felt experience of belonging.

The village, the city and the spaces in between

The earliest durable communities were villages, small enough that everyone knew everyone, and their creative life was woven directly into the calendar. Planting and harvest, solstice and saint’s day, weddings and funerals all came wrapped in music, costume and feast. The village feast day was not decoration on top of communal life. It was the mechanism by which communal life renewed itself, the annual occasion on which quarrels were set aside and the whole settlement performed its own togetherness.

Cities changed the scale but not the need. When medieval Europeans found themselves living among thousands of strangers, they invented new containers for belonging, and the most creative of these were the craft guilds. A guild of weavers or goldsmiths or masons regulated trade, but it also functioned as a community in the fullest sense, with its own patron saint, its own processions, its own charity for widows and orphans. In cities such as York, the guilds staged the great cycles of mystery plays, each trade performing its assigned episode of sacred history from a pageant wagon, so that the city’s economy and its theater were the same institution wearing different clothes. The cathedrals rose on the same logic, built across generations by communities who knew they would never see the finished spire.

Cities also taught us the value of what the sociologist Ray Oldenburg would later call third places, the settings that are neither home nor work where community actually happens: the coffeehouse, the tavern, the barbershop, the plaza, the front stoop. Third places are where art and community meet most casually and perhaps most importantly, in the pub session, the open mic, the chess tables in the park, the mural painted on the side wall of the corner store. A town can survive the loss of a factory. It struggles far more to survive the loss of the places where its people simply gather.

Nations, diasporas and the digital hearth

The modern era stretched community past the horizon of face to face acquaintance. The political scientist Benedict Anderson famously called nations imagined communities, held together not by personal ties but by shared stories, and it is striking how much of that imagining is done by art. Anthems, epics, national museums, history paintings and folk costume revivals were the tools by which millions of strangers were persuaded that they belonged to one another. The nineteenth century built opera houses and collected folklore for precisely this reason.

Migration then produced the diaspora, a community that carries its place inside itself. Wherever people have moved in numbers, their arts have moved with them and often grown stronger in transit, because for a scattered people culture is not entertainment but survival. Carnival in London’s Notting Hill, begun by Caribbean migrants in the 1960s, or the West Indian Day Parade in Brooklyn, or the Haitian, Portuguese, Indian and Korean festivals that fill calendars across New Jersey, are all the same phenomenon: a community using music, costume and food to remain itself in a new place, and in doing so remaking the place around it.

The newest communities gather around screens rather than squares. Online fandoms, craft forums, genealogy groups and diaspora networks are communities in every meaningful sense, complete with their own dialects, rituals and creative production. They can feel thin compared with a crowded kitchen, and the loneliness statistics of the past two decades suggest the digital hearth warms less than the real one. Yet notice what people actually do in these spaces. They share songs, swap patterns, post photographs of their grandmothers’ recipes. Even at its most disembodied, community still speaks the language of culture.

The three faces of heritage

Heritage is what a community inherits and decides to carry forward, and the people who protect it professionally sort it into three broad kinds. Tangible heritage is the physical stuff, the temples, townhouses, bridges, paintings, manuscripts and archaeological sites, everything you can touch or stand inside. Intangible heritage is the living inheritance, the oral traditions, performing arts, rituals, festive events and craft knowledge that exist only as long as people keep practicing them; recent inscriptions on UNESCO’s international lists range from reggae music in Jamaica to the artisanal know how of the French baguette. Natural heritage completes the picture, the landscapes, reefs, forests and geological wonders that communities treasure and that in many cultures cannot be separated from the sacred stories told about them.

The three faces are never really separate. A cathedral without its choir is a shell, a dance without its costume makers goes threadbare, a sacred mountain stripped of its forest loses more than trees. Heritage professionals increasingly speak of living heritage precisely because the monument and the memory sustain each other. The building keeps the story visible; the story keeps the building loved, and an unloved building rarely survives long.

Why heritage needs protecting

If heritage were safe, nobody would need to defend it. It is not safe. War remains its oldest enemy, and not accidentally, because destroying a community’s monuments is a way of attacking the community itself. Warsaw’s Old Town was deliberately dynamited in 1944 and painstakingly rebuilt from paintings and survey drawings, a reconstruction so faithful and so meaningful that it later joined the World Heritage List. The Ottoman bridge at Mostar was shelled into the river in 1993 and reopened in 2004. In 2012, Islamist fighters wrecked the medieval mausoleums of Timbuktu, and in 2016 the International Criminal Court convicted Ahmad al-Faqi al-Mahdi for that destruction, the court’s first conviction treating an attack on cultural heritage as a war crime in its own right. The wars in Syria and Ukraine have added grim new chapters to the same story.

Climate change is the newer threat and may prove the larger one. Venice floods more often and more deeply, coastal archaeology from Scotland to West Africa is washing into the sea, the adobe city of Chan Chan in Peru dissolves a little with every unseasonal rain, and warming waters have repeatedly bleached the Great Barrier Reef. Then there are the quieter enemies. Neglect, shrinking budgets and depopulation empty village churches and rust industrial landmarks. Looting feeds a global illicit market in antiquities, and museums in Europe and America are still reckoning with objects taken by force in an earlier age, most famously the Benin bronzes, thousands of which were seized when British troops sacked Benin City in 1897 and which have begun, slowly, to travel home. Every one of these losses is a theft from a community’s memory, which is why the world has built institutions to stand guard.

The guardians of the world’s memory

The best known guardian is UNESCO, the United Nations agency for education, science and culture, founded in 1945 on the conviction that lasting peace has to be built in the minds of men and women. Its World Heritage Convention of 1972 created the World Heritage List, which today numbers 1,273 cultural, natural and mixed sites in some 170 countries, from the Statue of Liberty to the Serengeti, along with a List of World Heritage in Danger that flags sites facing armed conflict, disaster or decay. A second treaty, the 2003 convention on intangible cultural heritage, extended the same protection to living traditions, and its lists now safeguard more than 850 practices, crafts and celebrations around the world.

Around UNESCO stands a constellation of specialists. ICOMOS, the International Council on Monuments and Sites, founded in 1965, is the global network of conservation professionals that evaluates cultural nominations to the World Heritage List and sets the doctrinal standards of the field. ICCROM, an intergovernmental center based in Rome since the late 1950s, trains conservators and restorers from every region, quietly multiplying the world’s capacity to care for what it has. The World Monuments Fund, a private nonprofit founded in New York in 1965, channels philanthropy to endangered places and publishes its World Monuments Watch, a recurring roll call of sites in urgent need. Blue Shield International, created in 1996 and named for the blue and white emblem of the 1954 Hague Convention on protecting cultural property in wartime, works as a kind of cultural Red Cross, helping to shield collections and monuments in conflicts and disasters. Beneath these global bodies runs a deep root system of national trusts and preservation societies, from the National Trust founded in England in 1895, now one of the largest membership organizations in Europe, to the National Trust for Historic Preservation in the United States and hundreds of state and county historical societies, including the ones caring for lighthouses, meetinghouses and painted theater curtains across New Jersey.

Listing a site or funding a restoration is only ever half the work, and the guardians would be the first to say so. A monument survives because a community keeps wanting it, and a tradition survives because someone teaches it to a child. Which brings the two halves of this story back together. Heritage is a community’s memory made visible, the durable form of all those festivals and guild processions and murals and songs, and community is what heritage looks like while it is still alive. You belong to at least one such community, probably to several, and its memory is partly in your keeping. Go to the street fair. Learn the recipe. Ask the oldest person in the room to tell the story one more time. That, more than any treaty, is how heritage is protected.