Once America’s most beautiful army base, this abandoned military fort on the coast of Monterey Bay has been left to the elements.

This splendid tomb may look fantastic, but there's nothing in it...

The fairy tale castle of the "fairy-tale king."

A small but immensely extravagant palace built by the "Night King."

This historic funicular system combines the old with the new while offering delightful views over the surrounding valley.

A preserved college lock-up that recalls a clubhouse approach to discipline.

Sitting in the basement of a castle, the largest wine barrel in the world is bigger than most apartments.

It's good luck to be mocked by this monkey.

This Nazi-built amphitheater was constructed on a sacred mountain site used by various German cults.

The birthplace of Karl Marx is now a museum dedicated to the communist revolutionary's life and work.

The last bastion of Roman presence north of the Alps looms over a German town.

A moving memorial to the fallen and missing from WWI trenches.

The oldest housing complex in Riga is a mini timeline of architectural trends.

A rare example of World War I trenches from the British front.