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

The most iconic structure in Scotland has been home to bishops, colonels, and Sean Connery characters.

A mysterious monument where a woman who records say never existed was burnt alive for being a witch.

Now famous as the "Harry Potter bridge," this impressive concrete viaduct has long been an icon in its own right.

Old-fashioned knowledge and modern engineering create the world's only rotating boatlift.

The heads of two giant mythological water horses honor Scotland's horselord past.

Known for the tunnel that leads visitors to the water.

One of New Zealand’s few castles boasts beautiful gardens, grand architecture, and a history filled with family drama.

You'd never know the houses at 23-24 Leinster Gardens were fakes—until you see the train tracks on the other side.

An iconic waterwheel in the Pennine Hills marks the location of one of Britain’s most profitable lead mines.

Home to the most complete dodo remains known - one head, and one foot.

Ancient Egyptian wigs, South American feather headdresses, a bounty of anthropological artifacts in Oxford.

The Bristol Camera Obscura housed in an ancient windmill.

A harem-inspired Moorish fantasy design in a Victorian-era Welsh castle.

Recently restored menagerie of Victorian-era beasts.

17th-century merchants in Bristol nailed their deals by placing money on these pedestals.

Golden and naked, the figure that was once the highest point in New York is all that remains of the second Madison Square Garden.

Yo, Adrian!

A clone-tree in Washington Square Park sprung from seeds that went to the Moon and back.

Mural made of 100,000 pieces of hand blown glass, and until recently, the largest glass mural in the US.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

Neo-cave art on the macro scale.

Prehistoric history as seen through the lens of an outsider artist.

Central America's deepest lake is actually a volcanic caldera, surrounded by three volcanoes.