While many places make the claim, the Library of Congress says this restaurant is the birthplace of the hamburger.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

A daybeacon pyramid is about all that's left of this island that is said to have sunk due to a pirate's curse.

This statue was given to France by the United States to commemorate the centennial of the French Revolution.

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

The sci-fi villain is a little-known inhabitant of the U.S. capital's largest cathedral.

The site of the climactic scene from the classic horror film is now a historic landmark.

The "lovely red Vega" of the legendary record-settling pilot.

A monument in Washington D.C. marks the spot from which all other roads were supposed to stem.

Bronze sculpture celebrating the relationship between Churchill and Roosevelt.

This luxury shopping lane has been protected by its own tiny police force for over a century.

London's smallest police station is barely the size of a phone booth.

San Francisco's oldest surviving monument and meeting place for 1906 survivors.

Only hotel where you can legally launder money.

The most loyal of little dogs, or a Victorian era publicity stunt?

360° views of the city plus five floors of optical illusions and hands-on science.

17th century streets hidden under Edinburgh were once a breeding ground for the black death.

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

Built hundreds of years ago this downtown iron barrier once protected a much despised king.

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

Curious crustaceans support an obelisk from ancient Egypt that now stands in modern-day Central Park.