Top of vintage highrise building with globe and clocks. A historic 1890s architectural masterpiece with an iconic clock tower that, once open to the public, now faces an uncertain future.Each clock on the building is 26.5 feet in diameter; each number measures 4 feet in height. The minute hands alone weigh half a ton each. Built in 1927, the Williamsburgh Savings Tower is one of Brooklyn's architectural icons due to its clocks located at the top of the building. The number is called "The Passage" and is part of a larger art instillation entitled "Metronome. " It's essentially a giant clock.