An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

Roughly 17 million letters to Santa have found their way to this Arctic Circle post office.

A 246-foot-high revolving restaurant rises unexpectedly from a forested Finnish hilltop.

The ship built to ferry passengers and goods to the doomed Titanic is now the last remaining White Star Line vessel.

A museum marks and documents the site of the Titanic's launch.

This irregularly shaped sea fortress has defended not one but three different sovereign states.

A subterranean house of worship carved right out of the bedrock.

This endearingly discomfited urinating statue commemorates the sneaky pees had by us all.

Finnish lake, and scene of an infamous murder mystery.