Local legend says Isaac Newton built this footbridge without any screws, bolts, or nails.

Numberless clock creates a meal of time for the dreaded, insectile Chronophage.

Follow the original medieval paths that wind through this intriguing section of the city.

Amazing and mysterious Neolithic settlement on Scotland's Orkney Islands.

This tin chapel was built by POW's during World War II and is painted to look like something much more grand.

A red sandstone freestanding monolith rises out of the sea in northern Scotland.

Possibly the oldest of Britain's ancient henges is also one of its most stark.

The true age of this ancient stone circle is unknown, but its stunning vista isn't in question.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

This quiet park's strange sedimentary spires were named after Kodak's color film.

The home of half the world's population of critically endangered mountain gorillas.

An enormous public square and parade ground built to celebrate Ghana's independence.

The clever workshop that has been designing some of the most unusual coffins imaginable.

The Voodoo Superstore of the world.

This tiny, tranquil Senegalese island serves as a powerful symbol of the Atlantic slave trade.

Despite a fraught and controversial history this African island holds a powerful monument to the tragedy of the slave trade.

This hotel is located on the edge of the world's largest salt flat and is made out of the only material around.

This red lake 4,000 meters above sea level is home to rare flamingos.

From a distance, Latin America's first Baha'i Temple looks like an enormous egg perched atop a hill.

A huge, bustling local market in Panama City.

A crumbling cathedral condemned by an earthquake.

This staircase full of Mayan hieroglyphics is perhaps the largest single text in the world.