The "mysteries" of this quintessential roadside oddity were almost destroyed by neglect but were saved by fans of kitschy wonder.

A sculpture outside London's oldest cathedral honors the Mohegan chief who died while petitioning the king.

Stay overnight in the world's most sleekly designed rabbit hole, free of charge.

The burning of this 12th-century church kicked off a campaign of Norwegian Black Metal terror.

Walk behind a 50-meter-high waterfall.

Walk 2,300 feet above the ground on the "Troll's Tongue."

Swedish skyscraper with a 90° twist.

This Scandinavian island is the site of the first modern observatory.

Danish observation tower designed to look like a giant beer bottle.

An ultra-modern diversity park in Denmark has turned an entire city block electric pink.

These mysterious Viking chess pieces spent centuries hidden on a remote Scottish island.

An artistic tribute to the famous singer, just around the corner from where he was born.

Red frames showcase remnants of one of New York's original subway stations.

Claiming to be the oldest hat store in the world, this historic haberdashery had a hand (and a head) in the creation of the Bowler.

The library's graceful rotunda is like a bibliophile's temple.

The world's largest model of our planetary system.

Installed at a chaotic intersection, this gave London traffic cops a place to hang their heavy woolen coats.

An easily overlooked stretch of ornate window fronts and gaslight lamps that could be right from the pages of Dickens.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

The quaint little store that is said to have inspired a famous Dickens novel was only given its name after the book was released.

London's smallest police station is barely the size of a phone booth.

The remains of Crystal Palace Great Exhibition of 1851.

A makeshift shrine to the late rock star is still kept up on the nondescript façade outside 1 Logan Place.

Hidden beneath the streets of London is a secret subway that only carried mail.