This massive redwood tree has a hole in the base big enough to drive through.

A fascinating insight into daily life in the Eastern Bloc.

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

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

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

A 98-room castle in the middle of Toronto that bankrupted a 19th century electricity multimillionaire.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

One of Canada's most incredible rare book collections holds hundreds of thousands of gorgeous tomes that the general public can touch.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

The yawning maw of this pagan visage is said to bite off the hands of liars.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

Eighty million natural history specimens call this gargantuan museum home.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

A house carved into a rock in the 1940s.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

The first declared National Monument in the United States.

Stepping away from the glitz of mobsters and casinos to learn about the other history of Vegas.

Macabre astrological automaton clock dating to the late 1400s.

Famously misunderstood wonder of the ancient world

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.