Unisphere

Start at the ground and work up. In a shallow circular pool in Flushing Meadows–Corona Park, Queens, a steel tripod — three legs meeting beneath a single load — rises 20 feet (6.1 m). On it sits a sphere 120 feet (37 m) across, bringing the whole structure to 140 feet (43 m). The sphere is not a solid ball. It is an open cage of steel rings, arranged in the two directions a school globe is ruled: some running pole to pole, some running parallel to the equator. Onto that cage are bolted more than 500 separate pieces of stainless steel — steel mixed with chromium, which stops the ordinary rusting of iron — each cut to the outline of a country's land. The land is solid metal. The sea is nothing at all: wherever an ocean should be there is only air, and through it you see the backs of the far continents hanging upside down beyond the near ones. Three further rings circle the sphere at a tilt, cutting across its own grid. They stand for the first artificial satellites — the first machines launched into orbit around the Earth, something that had begun to happen only a few years before.

The object exists because a fair needed a symbol. The 1964 New York World's Fair, held on this site, wanted one shape that could stand for the whole event, and the search had already failed twice: Robert Moses, the New York City parks commissioner in charge of the fairground, had rejected two earlier proposals for a landmark structure. The design that won came from Gilmore D. Clarke, a landscape architect. The story attached to it says Clarke worked out the idea while aboard an aeroplane in 1960 — a tradition that has travelled with the object rather than a documented moment, and one the record neither confirms nor disproves. What is documented is that Moses approved the proposal in early 1961, and that the design was refined further before anything was built. The credit is not entirely settled either. The catalogue record lists a second creator alongside Clarke: Peter Muller-Munk Associates, an industrial design firm. How the work was divided between the landscape architect and the design firm is not spelled out in the sources used here, and the gap is worth a sentence of its own — even on an object this recent, this famous and this public, the record of who decided what is thinner than you might expect.

The building fell to the American Bridge Company, a division of U.S. Steel, which fabricated the sphere between March and August 1963 — about 6 months from start to finish. The choice of builder carried its own message. The Unisphere was commissioned to celebrate the beginning of the space age, but it was also a demonstration piece: a company whose ordinary business was bridges producing an entire planet in stainless steel, showing what heavy American steel fabrication could do at scale. The sources used here record no hours, no workforce, no setbacks along the way; the making survives as two dates and a company name.

The fair's theme was Peace Through Understanding, and the sphere was dedicated to "Man's Achievements on a Shrinking Globe in an Expanding Universe". The form spells that dedication out, piece by piece. A shrinking globe means a world whose distances are collapsing, so the countries sit together on one graspable ball, with no borders drawn between them and no oceans to cross. An expanding universe is what the three tilted rings mean: they are orbits, not geography, drawn in steel around the planet. The fair described the whole as an image of global interdependence — the idea that the world's nations now depend on one another whether they choose to or not. The genre label sometimes attached to the object, Atomic Age, fits this vocabulary. It is design that speaks in the language of the diagram and the exhibition model rather than the monument.

Inside the fairground it was engineered as a destination. The sphere stands in a reflecting pool — a shallow ornamental basin whose whole job is to hold a surface of water — 310 feet (94 m) across, ringed by 48 pairs of fountainheads. When the jets run, the tripod and its base are seen through spray, and the eye travels upward to the part of the structure that appears to rest on nothing. More than 51 million people visited the Unisphere during the fair's run.

When the fair closed, the sphere stayed, becoming a permanent attraction of Flushing Meadows–Corona Park — which is how a temporary emblem turned, in time, into an unofficial symbol of Queens. The afterlife has not been smooth. Through the 1970s nobody maintained the structure, and it became visibly dirty. Stainless steel resists rust, but it does not resist grime, and the difference between a bright globe and a grey one is the whole visual effect. It was restored in the early 1990s, and in 1995 the city made it a designated landmark — a legal status that protects a structure from alteration or demolition. Protection turned out not to be the same as care: the sphere fell into disrepair again and needed a second restoration in the early 2010s.

Standing beneath it now, the strangest thing about the Unisphere is how open it is. An ordinary globe is a closed surface: you see one hemisphere and take the rest on trust. Here the empty oceans let the whole Earth be present at once. It is less a model of the world than a drawing of the world, held open in the air with the frame left showing.