A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

Huge masonic hall in Philadelphia with lavishly themed rooms.

A working steam clock, one of only a few in the world, located in Vancouver's Victorian Gastown.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

A little sculpture with a large wardrobe.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

Central America's deepest lake is actually a volcanic caldera, surrounded by three volcanoes.

Mural made of 100,000 pieces of hand blown glass, and until recently, the largest glass mural in the US.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

An ancient capital city that dates back 3,000 years old and harbors many surprises.

Buenos Aires' city of the dead contains some very famous remains, including Eva Perón.

This massive wooden building contains a giant Buddha, healing pillars, and tame deer wandering the grounds.

Infamous marsh filled with toxic waste, World War II-era London rubble, and dead mobsters galore.

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

The first American department store, and home to the largest operating musical instrument in the world.

Eccentric concrete mansion and museum designed and built by hand from the inside out.

A nightmare for the claustrophobic lies hidden in Southeast Asia.

Step inside Lucy, the world's largest "elephant."

An outlandish shoe shaped house built by an eccentric millionaire.

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

Macabre astrological automaton clock dating to the late 1400s.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.