9 West 57th St.

The Solow office tower at 9 West 57th Street in New York City is a giant ski-slope of a building designed by Skidmore Owings & Merrill. This huge red 9 sits on the sidewalk on city property and marks the building’s main entrance. The sculpture is fabricated out of half-inch steel plate and weighs three tons. It has become something of a New York landmark.

Architect: Skidmore, Owings & Merrill