This pseudo-steampunk weapons facility is the world's largest wood and glue structure, and packs quite a wallop.

The official atomic museum of the United States explores the explosive and productive history of a much maligned energy source.

This former steel and coal plant is now a neon-lit industrial fantasia.

Buildings from the fictional planet of Tatooine still litter the Tunisian desert.

An isolated dive site teeming with cnidarians.

The alpine falls where Sherlock Holmes apparently met his demise can actually be visited.

Isolated atop this Balinese sea crag is a lovely Hindu temple that is said to be guarded by sea snakes.

This memorial commemorating fallen Swiss Guards of the French Revolution has been called the saddest stone in the world.

An underground city of salt.

On Japan's Tashirojima Island, cats are king.

The middle finger of modernity.

An ossuary built in 1210 to collect bones from the Ospedale Maggiore of Milan.

"The prettiest love letters in the world" ... or so said Lord Byron.

Every equinox this Maya pyramid puts on a spooky ancient light show.

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

Better known as the "Body Farm," this unique research facility has been studying how human bodies break down since the 1980s.

Historic psychiatric asylum and most-filmed location in the Great White North.

Thousands of exquisitely carved stone water storage wells, hundreds of stone steps fill this exquisite medieval stepwell.

The 953 windows undoubtedly make this the world's most beautiful screened porch.

Home to three historic ships from the age of Vikings.

Iceland's largest lagoon is home to stunning multi-colored icebergs.

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

The real life Hobbiton, this sheep farm has been forever transformed since being built for The Hobbit film series.

This legendary city has been a tourist attraction for centuries.