Pirelli Tower is a 32-storey, 127 m (417 ft) skyscraper in Milan, Italy. The base of the building is 1,900 m2 (20,000 sq ft), with a length of 75.5 m (248 ft) and a width of 20.5 m (67 ft). The construction used approximately 30,000 m3 (1,100,000 cu ft) of concrete. The building weighs close to 70,000 t with a volume of 125,324 m3 (4,425,800 cu ft).

The MetLife Building is a skyscraper at Park Avenue and 45th Street, north of Grand Central Terminal, in the Midtown Manhattan neighborhood of New York City. Designed in the International style by Richard Roth, Walter Gropius, and Pietro Belluschi and completed in 1962, the MetLife Building is 808 feet (246 m) tall with 59 stories. It was advertised as the world's largest commercial office space by square footage at its opening, with 2.4 million square feet (220,000 m2) of usable office space. As of November 2022, the MetLife Building remains one of the 100 tallest buildings in the United States.