Liechtenstein's royal family calls this medieval alpine castle home.

Latvia’s first skyscraper, nicknamed ‘Stalin’s birthday cake.’

See an anatomy teaching collection assembled in the 1920s and 1930s.

A collection of historical engines and rolling stock from throughout Riga's rich railway history.

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

What almost started out as a spite house became an eccentric's found object masterpiece.

The colonial city's social history is reflected in its fanciful door knockers.

Storied crypts fill the most famous cemetery in Colombia.

Marvel at this immense work of art that greets arrivals to the city.

Hundreds of stone stairs and a winding medieval bridge connect this haunting Spanish island to the mainland.

Giant topiary dog once played a role in a terrorist bomb plot.

Legend has it that not even Stalin could pull down the 2015 European Tree of the Year.

One of the best-preserved wooden manor houses in Latvia, decorated with painted interior walls.

This medieval Estonian tower provides access to a series of tunnels that have been home to soldiers, punks, and fine art.

This disappearing geyser has been attributed to witchcraft, but really it's all about rainfall.

A trio of giant wooden megaphones turn up nature's volume in this Estonian forest.

A desert that rolls right up to the ocean, where it's so dry animals live off the fog.

This "dead marsh" sits among the largest sand dunes in the world, a forest frozen in time.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

Dedicated to the European Sinti and Roma peoples murdered during the Holocaust.

Macabre astrological automaton clock dating to the late 1400s.

The two abandoned overpasses are among the largest bridges in Poland.

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

A peculiar family mausoleum built by a German nobleman captivated by the occult.