A island reachable by a causeway at low tide is possibly one of the earliest Western European locations to be identified in text.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

This submersible road connecting a French island to the mainland is lined with safety towers for when the tide strands travelers.

Sometimes an island, sometimes a rocky outcropping connected to the world by a tiny suspension bridge.

Twice a day this ancient path disappears with the tides, leaving the Holy Island of Lindisfarne out to sea.

A rugged lava field dotted with molds of the ancient pines that were growing when the volcano erupted.

A chance to sleep among the firs and pines of the Oregon forest.

The short-lived railroad town in central Oregon has been abandoned since the 1930s.

The unique circular corral belonging to the “Cattle King” of Oregon.

The wooden airship was the largest flying boat ever built.

10,000 flowered plants bloom in the City of Roses.

The park preserves a single, rare species of carnivorous plant that spells doom for unsuspecting insects.

St. Francesca Romana, patron saint of drivers, resides in the church she founded.

One of seven Jewish catacombs in Rome and one of only two open to the public.

Hidden beneath the famous St. Peter's Basilica is a veritable city of the dead that may hold the remains of St. Peter himself.

The underground sanctuary of a mysterious ancient cult.

The engineering wonder and pleasure dome of a much-maligned emperor still holds undiscovered secrets.

An artist sees trees as a medium for sculpture.

The artist David Nash planted a circle of trees in 1977.

At this unusual park, domes, ladders, chairs, and more are made from trees.

A German town is growing a building out of trees.

Made from trees and then abandoned, this fence is still growing along a path in Germany.

For centuries, Germans have been dancing in trees.

Where lovers tie birch branches into long-lived knots.