A whimsical bridge adorned with decorative dragons.

This one-time health resort was used by aristocrats around the world.

The world's oldest known salt mine.

Visitors dip into a variety of pools of what was once ice.

Swarovski's museum/theme park is a fake diamond fantasia overlooked by a giant.

Trick water gardens from 1619 featuring a 200 piece mechanical theater powered by water.

Where the lovelorn find a home for their sentimental keepsakes.

A musical instrument played by the sea.

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

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

Home to items never before seen by the public.

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

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

The first declared National Monument in the United States.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

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

Towering basalt columns, a creation of fire and ice.

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

Elevated freight railway turned wildly successful urban park.

Bangkok celebrated its shifting monarchy with a militaristic homage to democracy.

On a winding Vienna side street, one museum has turned their windows into a monument to history’s peace-minded heroes.

This series of Baroque passageways in Vienna's cultural center mix old architecture with modern art.

A shrine built to combat the bad karma of a commercial venture.

Giant WWII fortresses that fired 8,000 rounds a minute, now home to thousands of pigeons.