The mysterious empty cupola behind the monumental arch points to an ancient prophecy of Delhi.

A blooming house of worship for the masses.

The world's first combination ski slope and power plant.

Every summer local children form "pysja patrols" to save young birds that have wandered from their nests.

If you visit the burial place of King Frederick the Great, you'll likely find a couple of potatoes sitting on his tombstone.

This risqué sculpture, based on a Hans Christian Andersen fairy tale, caused outrage 35 years after it was erected.

Art Deco stylings conceal the true nature of this bridge.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

L. Frank Baum wrote part of the "Wizard of Oz" series in this wooden Victorian beach resort.

A giant concrete orb in far north Iceland marks the ever-shifting boundary.

Climb a steep hill in 90 seconds on the second-oldest urban subway in the world.

This verdant, tree-lined Reykjavik graveyard is both enchanting and eerie.

A 300-ship graveyard, with a few still visible at low tide.

Formerly known as National D-Day Museum, this collection commemorates the battles of Normandy and WWII.

The remains of a ruined mansion memorialize the 1906 earthquake.

San Francisco's oldest surviving monument and meeting place for 1906 survivors.