Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

This ancient structure is widely thought to be the oldest intact pyramid in the world.

The martyr's wax-enhanced skeletal remains lie preserved in a glass case in the Santa Maria della Vittoria in Rome.

Every hour the doors open to reenact the legend of the heroic mayor who saved his town by drinking a gallon of wine.

It was originally part of a "terrible lizards" collection at the 1964 New York World’s Fair.

A bizarre house filled with an astounding array of collections.

A painfully obvious spy house sits right across the street from the Russian Embassy.

One of its engravings is believed to be among the first representations of medical and surgical instruments.

Breathtaking and huge 430 year old maps of Italy.

Holding multiple historical boats and an entire 19th century village, this New England attraction is the largest maritime museum in the world.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

A science teacher's dream.

Explore the complex ecology of this multifaceted nature preserve by riverboat.

A museum honoring Germany’s cucumber mecca offers a great dill of gherkin history.

This massive roadside mascot was the first version of the giant to illustrate his butt.

An ancient instrument used to measure the waters of the Nile so Egyptian farmers would know whether to expect famine or flood.

The fairy tale castle of the “fairy-tale king,” this was also the inspiration for Disney’s “Sleeping Beauty.”

Half-drowned wooden stumps and stone blocks are all that remain of a Victorian landing that was destroyed by storms.

This ambitious attraction was the brain child of a lake resort impresario, and built by the WPA.

The "Great Sewer" of ancient Rome is one of the oldest sewer systems in the world, and is still in use.

This rare volcano spews the strangest and (literally) coolest lava in the world.