This piece originally appeared on Travel + Leisure.
Not only is Grand Central Terminal one of the world’s most beautiful train stations, it’s also one of New York’s most fascinating landmarks. Host to more than 750,000 people who pass through it daily, the station is a crossroads for locals, commuters, and tourists from all over the world. Built in 1913 by Commodore Cornelius Vanderbilt, it was meant to symbolize wealth and power at a time when railroads were making travel easier and more comfortable than ever before. After making a fortune on steamships, Vanderbilt turned his sights to the railroad and had the beautiful, Beaux-Arts station built using sumptuous materials like Tennessee and Botticino marble, brass, opal, and Guastavino tile. Though the famous landmark may seem well-trod by now, these eleven secrets might surprise you.
1. There’s a Bar Hidden Inside
Everyone knows about the Oyster Bar, but did you know there’s also a sumptuous lounge inside? Enter the station from Vanderbilt Avenue and make your way to the balcony level. There you’ll find a gorgeous bar where waitresses in black dresses, pearls, and red lipstick serve Jazz Age-inspired cocktails, like the decadent Prohibition punch. The sophisticated space was originally the office of tycoon John W. Campbell, a friend of Cornelius Vanderbilt. In 2007, it was restored to its former glory, complete with Oriental rugs, porcelain vases, a massive stone fireplace, leaded glass windows, and plush sofas. It’s hands-down one of the best hidden bars in New York.
2. There Are Two Valuable Clocks
Outside, on the station’s façade, is the world’s largest Tiffany clock, weighing in at 1,500 tons and spanning thirteen feet in diameter. Made of brass and stained glass, it is surrounded by a statue depicting the Roman gods Mercury, Hermes, and Minerva designed by French artist Jules-Félix Coutain. Inside the main hall, the four-sided ball clock that sits atop the information kiosk is worth an estimated $10 million. Its four faces are made of opal set in brass with a brass acorn on top—the Vanderbilt family’s symbol.
3. Oak Tree and Acorn Motifs Are Everywhere
The Vanderbilt family motto was “Great oaks from little acorns grow.” Cornelius Vanderbilt wanted everyone to know he was responsible for the magnificent station, so he had French artist Sylvain Saliéres create decorative flourishes of bronze and stone laden with oak leaf and acorn motifs. You can spy them on ornamental carvings in Vanderbilt Hall, on the arches reaching up to the ceiling in the main concourse, and on the giant bronze chandeliers positioned throughout the station.
4. The Whispering Gallery's Origins Are Unknown
In the passageway near the Oyster Bar stands an acoustic marvel known as the Whispering Gallery. Two people standing at opposite corners of the vaulted archway can communicate, their voices reverberating like a game of telephone that no one else can hear. The remarkable vaulted ceiling is made of Guastavino tiled arches, like the Oyster Bar, but no one knows if it was intended to create this acoustic effect.
5. The Constellation Ceiling is Backwards
In the main concourse, the ceiling was originally meant to be a skylight, but when time and money started to run out, artist Paul Helleu came in to design the fantastical mural instead. A Columbia University astronomer confirmed the artist’s design for accuracy, but it turns out the painters put the plans on the floor while they worked, which resulted in the constellations being painted in reverse.
6. Tennis Courts Are Inside the Station
It’s a little known fact that the Vanderbilt Tennis Club is on the fourth floor and is open to the public. Anyone willing to pay rates of $200-$280 per hour can reserve time on the courts and in the fitness center.
7. Windows Have Hidden Walkways
Though this secret is kept tightly under wraps, the giant windows visible from the main concourse have hidden walkways that offer bird’s eye views of the station. They exist so employees who work in the offices above the terminal can navigate it without fighting through the crowds down below. Though public access is highly discouraged, the walkways are accessible if you know how to find them.
8. Secret Entrance to the Waldorf
A two-story train shed concealed under the station contains 33 miles of tracks—more than twice as long as the island of Manhattan. VIPs who want to avoid the public gaze have used a top-secret track, known as Track 61, to get around. It connects to an elevator that goes directly into the Waldorf Astoria Hotel. President Franklin Delano Roosevelt is believed to have used it to hide his polio from the public. It’s still kept available for the president when he’s in town, just in case he needs to make an emergency exit from the hotel.
9. A Top-Secret Room Doesn’t Appear on Blueprints
It wasn’t until the 1980s that officials acknowledged the existence of a top-secret room known as M42, though its exact location remains a well-guarded secret to this day. The 22,000 square-foot chamber ten stories below the main concourse doesn’t appear on any blueprints or maps of the station, and at one time, anyone who attempted to go down there risked being shot by guards. It contains a series or rotary converters once responsible for controlling the electricity that powered the trains connecting the east coast. If compromised, as the Nazis attempted to do during WWII, the entire railroad system would be crippled.
10. The Station Narrowly Escaped Demolition
By the 1950s, cars and planes became the mode of transportation in vogue, and in 1954 the New York Central wanted to tear the beautiful Beaux Arts station down. Skyscrapers were proposed to take its place, but luckily those plans never came to be. After the original, gorgeous Penn Station was demolished in 1963, preservationists fought to save Grand Central. Most notably, Jackie Onassis and legendary architect Philip Johnson banded together to form the Committee to Save Grand Central Station and succeeded.
11. It Will Become Even Larger
Grand Central may look finished, but the East Side Access Project is set to expand the terminal even further by 2023 at a cost of some $10 billion. A new terminal will allow the Long Island Railroad to stop at Grand Central, making life a lot easier for commuters trying to reach the east side who have to go through Penn Station. A whole new LIRR station will be built underneath Park Avenue, providing connections to the seven subway lines that run through Grand Central.