When the Grand Central Terminal opened in 1913 after 10 years' construction, it revealed a sophisticated four-sided clock on the top of its information booth, according to Grand Central Terminal. The clock was manufactured by the Seth Thomas Clock Company, a renowned Connecticut-based designer, according to ClockHistory.com. When the station was renovated in the late 1990s, the clock had to be moved just a little to be realigned with the building's compass points.
The clock's four faces are made from opal, and the remainder of the clock is made of brass, according to NYCTourist.com. The pagoda that the clock rests on is made from marble and brass, and a hidden spiral staircase is inside of it that can take people to the terminal's lower level, according to Grand Central Terminal.
Given its central location, the Grand Central Terminal's clock is a time-honored meeting spot for people who visit the expansive station, which is 120 feet wide, 275 feet long and has 125-foot ceilings.