The world's largest key collection features keys to the White House, Frankenstein's castle, and Hitler's bunker.

This spectacular track has run continuously since 1882.

The largest source of fossilized insects anywhere.

The highest paved road in North America winds its way up Mount Blue Sky in Colorado to an altitude of 14,130 feet above sea level.

Thanks to a quirk of elevation this gift shop produces magic doughnuts that are found nowhere else on Earth.

When ecosystems collide in the arid Southwest.

The highest bridge in America was built for an almost unnervingly small amount of money.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

America's smallest national park site is the former residence of exiled Polish national hero Thaddeus Kosciuszko.

This beloved marketplace mascot poops money and grants good luck.

This elaborate towering structure was once famed for its revolutionary height.

The first American department store, and home to the largest operating musical instrument in the world.

Yo, Adrian!

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

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

Instead of solid circles, the stoplights in this northern Icelandic town have glowing red hearts.

Akureyri is home to an oversized can of one of Iceland's favourite beers.

Twisted girders are all that remain of an Icelandic bridge that was wiped out by a combination of volcanic heat and glacial floods.

The picturesque birthplace of Icelandic democracy is drenched in the blood of its brutal past.

Largest private bird collection in Iceland, formed from a tragic accident.

A giant red chair bolted to a rock on a remote mossy hillside in Iceland.

These enlarged egg sculptures represent the native birds of eastern Iceland.