These powerful, if squat, Canadian waterfalls flow in different directions depending on the time of day.

The final resting place of 121 victims of the RMS Titanic, 42 of which may never be identified.

The ancient latrines of the Greeks, in all their public glory.

Replicas of Apollo's leonine stone guard cats still line a sacred row in Greece.

Two geological phenomena in one precarious locale: a towering stone window, and a deep blue void.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

One of the few standing Roman lighthouses and a labyrinth of tunnels are a couple of the secrets at this historic castle.

An 18th century wonder of the world, lost in WWII, re-created at the Catherine Palace.

This elegant arc of a waterfall marks a religious turning point.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

This stunning concert hall has become a symbol of Iceland's national recovery.

If a glacial river suddenly diving into a sheer chasm via a dramatic, multi-stage waterfall isn't peak Iceland, it's certainly close.

Amazing and mysterious Neolithic settlement on Scotland's Orkney Islands.

The true age of this ancient stone circle is unknown, but its stunning vista isn't in question.

Possibly the oldest of Britain's ancient henges is also one of its most stark.

Thanks to both terrific preservation and historic vandalism this ancient site is known as the "Heart of Neolithic Orkney."

Monuments don't get much more metal than these three giant viking swords planted in a Nordic hill.

Norway's oldest cathedral still in use.

One man's exploration of the human form, including the bizarre and delightful "Man Attacked by Babies."

Home to three historic ships from the age of Vikings.

Old Danish castle immortalized in Shakespeare's Hamlet.

Swedish skyscraper with a 90° twist.

This chimerical bridge/tunnel appears to dead end right into the sea.

Vortex-shaped aquarium hosts Europe's largest school of piranhas and other ocean creatures.