The "lost friend” is the most famous of the six moai statues that were removed from Easter Island.

The handiwork of a underdog clockmaker who solved an impossible problem for an Empire, and forever revolutionized seafaring.

A statue of the legendary Celtic warrior queen who fought the Roman invaders stands in one of the cities she once destroyed.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

19th-century scientists would make the pilgrimage here to verify the precision of their measuring sticks.

Hear the quietest sound from across the dome.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

Macabre astrological automaton clock dating to the late 1400s.

This natural marble cave is one of only five national monuments in Oregon.

This restaurant's marvelous musical machines include a self-playing violin.

Historical trolley restoration and operation at History San Jose, Kelly Park.

The rest of him lived another 61 years and was buried elsewhere.

An extensive collection of ancient Egyptian artifacts and mummies.

The largest permanent Monopoly board makes one of the longest games even bigger.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

This restaurant proudly displays bread signed by the 39th president.

Trade in that pesky human soul for cold-hard circuits.

Island where motor vehicles are banned -- home to the only carless highway in the United States.

A very big rock just plopped down in the New England woods.

The smallest museum in Basel, Switzerland, is a two-foot-by-two-foot window in the door of a 600-year-old house.

A monument to the three wars that led to German unification towers within a Berlin traffic circle.

Beneath the impressive baroque cathedral that rises from the center of Berlin lies the largest collection of Prussian royals in the world.

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".