Scotland is filled with standing stones that date back hundreds or thousands of years. This is not one of them.

The elaborate clockwork contraptions in this Scottish gallery create small worlds of whimsy and horror.

A memorial commemorating the only Scottish police investigation into an extraterrestrial incident.

According to legend, this tomb holds the secrets to time travel.

A comprehensive collection of toy and model trains, largely from the mid-20th century.

Underneath the historic center of Mexico City, the remains of a temple dedicated to the Aztec god of the wind.

These ruins of an octagonal stone school that was later used as an A.U.M.P. church exemplify a popular school design from the 1830s.

Enchanting gardens surround a derelict mansion, all hidden in plain sight behind a stone wall.

An award-winning children’s garden enchants visitors at the intersection of natural beauty and fairy tales.

Mother Nature outdoes herself with this stunningly beautiful set of caves carved into marble.

This huge pile of volcanic boulders hides a stunning network of secret grottoes.

A collection of outdoor mystical statues paying homage to indigenous Australians and ecological stewardship.

The sound of swaying stalks in this stunning grove has been named a governmentally recognized sound.

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

Giant granite sculptures representing family on the northern coast of Spain.

It's a pretty creepy lock-up.

America's first wax museum opened in 1948.

In this case, 'zero' marks the spot where the iconic Old Spanish Trail ends.

A 1950s eccentric's vision of Eden preserved as a hiking trail.

A six-story treehouse offers spectacular views of New York's Finger Lakes region.

This collection started by a Cornell professor once held more than 600 human brain specimens, including the one that belonged to its founder.

In upstate New York, gorgeous waterfalls and a watermill are slowly being reclaimed by nature.

This exhibit allows visitors to wander through the interior of a replica Ice Age glacial cave.

This art center is way beyond your average pumpkin-carving operation.