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

The big toe of this towering monument to a Croatian national hero is worn from years of superstitious rubbing.

Castle and secret tunnel withstood a siege until its owner was killed by the Holy Roman Empire, while sitting on the toilet.

A miniature train-ride through Slovenia's largest cave system.

An eclectic art form practiced by untrained masters is celebrated at this museum in the heart of Zagreb's old Upper Town.

This 135-year-old weather station studied the effects of the climate on human health.

Now harmless, this looming post struck fear into the heart of medieval troublemakers.

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.

The glacier tucked within a New Zealand rainforest.

Dolphins, ancient clams and hundreds of waterfalls make this one of the world's top tourist destinations.

This trio of Australian rock spires may have inspired aboriginal legend or just modern tourism.

Come for the flowers, stay for the bats!

This historic observatory contains the world's oldest refracting lens telescope.

Take shelter from Hawai'i's tropical heat under the massive canopy of largest Banyan tree on the island.

The only royal palace on U.S. soil has been a territorial capitol, a military headquarters, and a prison for a queen.

This museum of Hawaiian and Polynesian culture is the legacy of the last descendant of the Kamehameha Dynasty.

This narrow coastline trail through the dense Kauai wilderness is among the most beautiful and dangerous in the world.

A statue in the heart of Edinburgh honors a bear that served in the Polish military during World War II.

The final resting place of soldiers' loyal canine companions.

A small island abbey is the final resting place of many medieval Scottish monarchs, including the real Macbeth.

Now famous as the "Harry Potter bridge," this impressive concrete viaduct has long been an icon in its own right.

The mysterious megaliths have enchanted and intrigued visitors for thousands of years.

The most iconic structure in Scotland has been home to bishops, colonels, and Sean Connery characters.