Cass Gilbert, born in 1859 and died in 1934, was a renowned monumental architect. His buildings remain focal points in the United States today. While he designed buildings around the country in locations as varied as Washington D.C. and Minnesota, Gilbert made his mark forcefully on New York City.

Check out these ten beautifully designed must-see Cass Gilbert buildings in New York City:

10. Woolworth Building

Built from 1910 to 1913 at 233 Broadway, the Woolworth Building, nicknamed the “Cathedral of Commerce, is a fifty-eight story skyscraper in the Gothic Revival style.The building was commissioned by by the millionaire Frank W. Woolworth and when it was built, it was the tallest building in the world for seventeen years and it was used as a model for how skyscrapers should be built.

The stunning Woolworth Building lobby has been closed to the public for over a decade, but Untapped Cities offers exclusive tours of the lobby, mezzanine and lower level with the great-grand daughter of Cass Gilbert, Helen Post Curry. The tours are one hour long and the next available date is July 29th:

VIP Tour of the Woolworth Building