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

A preserved oak tree about 3,500 years old found in Riga, Latvia.

Flamboyant architecture from the turn of 20th century.

3,000 market stands in five former Zeppelin hangars.

Launch site for nuclear war against Western Europe.

A narrow strip of land is home to the tallest migrating dunes in Europe.

Open-air museum with a large collection of Soviet-era statues.

A memorial to the murdered Jews of Kaunas.

Museum deep in the catacombs of St. Michael the Archangel Church is explored by touch, sound, and smell.

Sculpture garden of religious statues made it through Soviet rule.

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

Once known throughout Europe, this tiny and unusually progressive 18th century micro-nation within Lithuania now lies in ruins.

This micro-nation may be some sort of prank, but its constitution sure seems official.

A curious art park at the geographic center of Europe is home to 3,000 television sets and other wonders.

No one knows who built this strange cave of worship or exactly why.

The growing stones of Romania.

Moss and stone turn this waterfall into an otherworldly liquid veil.

One of the oldest churches in Romania is believed to have been built on the site of a pagan temple.

This elaborately decorated, fairytale-like Romanian royal palace is one of the most striking castles in Europe.

This fairy-tale castle would make Dracula (who is said to have been imprisoned there) jealous.

A mud brick kasbah with a history of lavishness and traitorship.

A Moroccan getaway in the mountain range that plays the Himalayas' stunt double.