Architecture of the United States New York City's Woolworth Building designed by architect Cass Gilbert, 1913. Raising previous technological advances to new heights, 793 ft (233 m), it was the world's tallest building until 1930. Frank Woolworth was fond of gothic cathedrals. Cass Gilbert constructed the office building as a cathedral of commerce and incorporated many Gothic revival decorative elements. The main entrance and lobby contain numerous allegories of thrift, including an acorn growing into an oak tree and a man losing his shirt. The popularity of the new Woolworth Building inspired many Gothic revival imitations among skyscrapers and remained a popular design theme until
Cass Gilbert St. Paul Endicott Building. His goal was to move to New York City and gain a national reputation, but he remained in Minnesota from 1882 until 1898. Many of his Minnesota buildings are still standing, including more than a dozen private residences (especially those on St. Paul's Summit Avenue), several churches featuring rich textures and colors, resort summer homes, and warehouses. The completion of the Minnesota capitol gave Gilbert his national reputation and in 1898 he permanently moved his base to New York. His breakthrough commission was the design of the Alexander Hamilton U.S. Custom House in New York City,