Trump Tower is a 58-story mixed-use skyscraper located at 725 Fifth Avenue, at the corner of East 56th Street in Midtown Manhattan.

The Trump Tower is the 52nd tallest building in New York City. The tower is a reinforced concrete, shear-wall/core structure and was the tallest structure of this type in New York City when completed. A concrete hat-truss at the top of the building ties exterior columns with the concrete core. This increases the effective dimensions of the core to that of the building in order to resist the overturning of lateral forces (wind, minor earthquakes, and impacts perpendicular to the building’s height). A similar structure was used for Trump World Tower.

Ordinarily a building of that height could not have been built on the small site. By mixing uses (retail, office, and residential), constructing a through-block arcade (connecting to the IBM building to the east), and using the air rights from Tiffany’s flagship store next door, and including the atrium (designed as a “public space” under the city codes at the time), Trump was able to assemble a bonus package that enabled a taller tower.