An empty relic of the Moscow Olympics crumbles away in Estonia's capital.

A chaotic collection of coin-operated slot machines designed to delight and disturb in equal measure.

These grandstands are among the oldest continuously used stands in the world.

The second-longest pier in the U.K. stretches a whole kilometer into the Irish Sea.

The western face was supposedly left clock-less to snub the Welsh.

Mysteriously stacked storefront paths give this medieval British town an iconic style like none other.

An unexpectedly extraterrestrial room in a former Victorian resort club.

One of the few surviving street funiculars in the world.

The highest peak in Wales is said to be the final resting place of a giant killed by King Arthur.

A miniature Italianate fantasy village on the coast of Wales and the set of ITC classic "The Prisoner."

Miles of man-made caves and tunnels are currently used for cultivating mushrooms.

The opulent home that inspired Tintin's Marlinspike Hall and the adventures within.

Bacteria and algae give the salty water its bubblegum hue.

Along the most northwestern point in Africa is an ancient cave surrounded by legends.

Single runway interrupted by a busy road that cuts across its middle.

Scores of wax baby figurines add an unusual mood to this beautiful church on the Greek coast.

An ancient necropolis of magnificent tombs.

Once part of an ancient international harbor, it's now an all-you-can-eat shrimp buffet for flamingos and other water birds.

For nearly 2,000 years this church has been waging war on local snakes by importing cats.

A small island with shimmering pink sands, home to loggerhead turtles and rare plants.

This abandoned Greek island was the last active leper colony in Europe.

Scotland's only funicular railway is also the United Kingdom's highest.

This castle was established by the 4th Duke of Montrose and is connected to the Buchanan Clan.

A local tree surgeon has created a whimsical walk full of carved tree stumps near Scotland's Loch Lomond.