Frida Kahlo's childhood home, now a museum of her life and works.

A jewel of the Mexico city skyline now slowly crumbles after surviving an earthquake.

66,000 pieces of art, donated by one of the world's richest men.

A quirky and charming restaurant founded by artists.

The winter home of millions of migrating monarch butterflies.

Climb through the life of a Mexican hero as you ascend a 130-foot statue.

An Italian hillside ghost town.

The centuries-old trees lining both sides of this dirt road may become Madagascar's first natural monument.

These powerful, if squat, Canadian waterfalls flow in different directions depending on the time of day.

Twice a day, the water of the Petitcodiac River flows upstream in a surfable wave.

A quarter mile off the coastal tip of Maine you'll find the "Beloved Island" of Franklin Delano Roosevelt.

A remote candy-striped mountain in the Peruvian Andes straight out of the pages of Dr. Seuss.

Mexico's astounding mummy museum with "the world's smallest mummy."

There is nothing like a religious festival celebrated with blow-up sledgehammers.

The only castle in North America to ever house European sovereigns.

Two waterfalls flow down the cliff faces decorated with rare natural basalt columns.

Extraordinary sculpture garden created by an eccentric English poet.

This portion of a lovely Belize beach is infested with (harmless) sharks and rays.

An abandoned NSA listening post on Berlin's "Devil's Mountain."

The largest free-standing aquarium in the world resides in a hotel lobby in Berlin.

An ancient system of freshwater caves filled with animal bones, including that of species long-extinct.

This Balinese sea temple is thought to be guarded by the hundreds of monkeys that live around it.

One native village in Bali lays their dead at the foot of a holy tree whose natural fragrance seems to hide the stench as the bodies decompose.

A flooded Mexican cave that hides a river beneath the water.