This park is home to California's first oil boomtown, with structures that have stood for more than a century.

One of the largest legal spray spots in Hamburg.

In legend, this ancient dolmen was said to have been created when a troll tried to destroy a church.

This Danish art forest places loud works of contemporary art among the pensive silence of nature.

This quiet bird sanctuary on the Danish coast is home to something not usually found in a conservation area: hunters' cabins.

A walkable map of the world, made from soil and stone by one man.

Remnants of the Nazis' occupation of Denmark linger along the sand.

Nearly 40 miles and 1,000 years of limestone mines under Denmark.

Apartment complexes built into huge repurposed natural gas tanks.

Op-art architecture designed for happiness.

Handsomely crafted representations of our round planet.

A tropical paradise just a short trip from the opera house is filled with beautiful winged creatures.

A small museum filled with over 1,000 clocks, and one particular clock calibrated to run until the year 9999.

The beautiful baroque library of the Hapsburg empire.

The crypt of the imposing Stephensdom holds royal intestines and thousands of skeletons.

The final resting place for the remains of 143 Habsburg royalty.

Collection dedicated to funeral rites, equipment, and mourning rituals of the Viennese.

The resting place for anonymous victims of the Danube's dark waters.

A wunderkammer of exoticism immortalized by Tom Waits.

Executed in 1401, Exhumed in 1878, Stolen in 2010.

An intricate and amazing house built by architect Karl Junker.

A church filled with the bones of hundreds of virgins martyrs—or so they say.

Gargoyle head that brings good luck.

The site of good faith and good nature in the fictional world of Kcymaerxthaere.