Disused seaplane hangar gets a second life as the jaw-dropping home of Estonia's museum of maritime history.

This abandoned mining village was predicted to resist decay longer than any other modern human settlement.

Covering 13 acres and hosting 3,000 shops, this is one of Africa's biggest urban markets.

On La Gomera, "Silbadors" communicate in a 4,000-word language of whistles.

A wooden rollercoaster that still delivers a thrill.

The world's most elegant power lines.

This massive redwood tree has a hole in the base big enough to drive through.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

Traversing these canyons, visitors can take in stunning views and glimpses of the region's history.

Tiki luxury on Nob Hill.

A massive volcanic plug is now a protected area that hosts a number of bird species.

A huge musical instrument played by the ocean.

Beneath the southern end of the Golden Gate Bridge is the “Gibraltar of the West Coast,” a fort built to protect the San Francisco Bay from naval attack.

Thousands of crosses and markers for soldiers who lost their lives in Iraq and Afghanistan blanket a California hillside.

Handmade treasures from around the world.

This stretch of beach along California's central coast is a busy highway for the largest seal in the northern hemisphere.

The unbelievably opulent home built for an infamous newspaperman.

The most southern point you can drive to in the Western Hemisphere.

Sip cherry liqueur at a bar dating back to 1840.

The Cathedral of Salamanca has a number of unusual carvings but none so surprising as a modern astronaut.

The facade of this 16th-century building is decorated with carvings of 300 seashells.

The world's oldest bookshop still in operation.

This unique architectural wonder is also tied to one of the 20th-century's most renowned writers.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.