Places meltingknight Wants to Go

A fortress built to pacify local uprising that had a stint as a Nazi concentration camp before becoming a five-star hotel.

World's largest crossword puzzle spans the side of a towerblock, its clues scattered throughout the city.

The ruins of an abandoned church loom within a picturesque Ukranian village.

The fences outside some of South London's estates are made from recycled World War II stretchers.

These old World War II fortifications have been transformed into an unusual equine attraction.

Witnessing the might of this dessert-colored desert waterfall is a rare, powerful treat.

This towering volcanic plug stands out among the dramatic formations that dot this otherworldly desert valley.

A cone-shaped top and cylindrical body set this 900-year-old structure apart from other Italian bell towers.

Bridges, terraces, and replicas of historic structures all built of rock and petrified wood by one man.

Unknown to many, this sparkling turquoise lake hides amid Oregon's snowcapped mountains.

Africa's fourth longest river originates from a burbling spring in a secluded stretch of woods.

A memorial marks the spot where a plane crash killed several United Nations members on a peace mission to the Democratic Republic of the Congo.

Rare pigmented engravings cover the walls of this Stone Age shelter.

This unique competition celebrates an American Indian and Canadian First Nation cultural tradition.

Baltimore's classic clock tower was once topped by a rotating, 20-ton medicine bottle.

One of the oldest anatomical theaters in the U.S. still in use was once the site of an infamous cadaver riot.

The childhood home of the Sultan of Swat is just a line drive away from Oriole Park at Camden Yards.

This slowly crumbling mansion was home to one of East Africa's richest and most powerful slave traders.

A remote island settlement off the coast of Tanzania is a storied archaeological site with an ancient past.

This massive underground salt mine now holds a sci-fi theme park in its depths.

The Natural History Museum that time forgot.

Some call this eerie forest of crooked trees the "Bermuda Triangle of Romania."

This memorial depicts the unlikely team that won England the Sir Thomas Lipton Trophy.

An American ghost town hides along a side street in Scotland's capital.