Walk along the medieval fortifications that have been protecting Tallinn since the 14th century.

A top secret Cold War bunker hidden beneath a Latvian spa facility is now open for tours.

The European Union’s tallest freestanding structure provides radio and television broadcasting to half of Latvia.

An old hill fort covered in over 100,000 crosses is a symbol of Lithuanian nationalism and beliefs.

Micro-nation based around a nine-story high illegally built tower.

This Nazi ruin was the site where Hitler was almost blown up by a suitcase bomb.

This attraction was abandoned after the Chornobyl disaster.

A marvel of Byzantine engineering under the streets of Istanbul.

The hallucinogenic center of the ancient world.

Breathtaking and huge 430 year old maps of Italy.

Valletta’s outdoor theatre stands within the ruins of a 19th-century opera house.

This massive monument towers over the city as a constant reminder of the lives lost during Algeria's hard-won war for independence.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

This glass skywalk offers vertiginous views down the volcanic cliffs to the beach below.

Fortune tellers, snake charmers, poets, and storytellers all gather on this historic square in Morocco.

This tiny square mile of Canadian sand was once considered the world's smallest desert.

A tiny wilderness cemetery commemorates the deadliest episode of the Klondike Gold Rush.

The youngest volcano in Central America.

An ancient city hidden in the heart of the Sierra Nevada mountains.

The Uros people live on floating reed islands in lake Titicaca.

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

On the outskirts of a desert trading village high on the Andean plain, steel giants have been destroyed by salt winds.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

These mammoth-yet-narrow crevasses in the Earth are perfect for taking an otherworldly swim.