Despite the skill of people like Jacob, the clocks in Grand Central often contradicted each other — even the four clock faces on the information booth didn’t have the same time.

The Information Booth in Grand Central receives more than 1,000 questions an hour. The Information Booth clock has an often-quoted value in the tens of millions of dollars due to its history ...

On the main floor is an information booth, above which is a four-sided clock made from precious opal and estimated to be worth $10 to 20 million. On top of the clock is an acorn.

The four-sided opal glass information booth clock (seen weekly in the "Saturday Night Live" stage set) is the eye of the rush-hour storm in the middle of the Main Concourse.

New York City's magnificent Grand Central Terminal turns 100 this weekend. Here is a nugget of information for every year of its existence.

Other must-sees include the Information Booth clock, the Whispering Gallery and Grand Central Market, a European-style food market that sells produce, gourmet ingredients and treats.

But embedded in plain sight in the front of the building is one of Grand Central's most beautiful show-stoppers: that enormous glass Tiffany clock, which we got to inspect from the inside looking out.

The transit hub's famous clock in the center of the main concourse, which is estimated to be worth at least $10 million, is synced to the U.S. Naval Observatory's atomic clock in Bethesda, Maryland.

Adorning the top of the information booth, this clock is more than just a pretty face—er, faces: Its four opal sides are valued anywhere between $10 and $20 million.

The Grand Central website notes: 'Pay close attention to the light fixtures, the tip of the Information Booth Clock, and the elevators, and you will see these flourishes abound.' 9. A hidden track ...