These remarkable cascades are the jewels of Upper Tees.

The longest staircase lock in Britain.

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

This single-track road rewards brave drivers with stunning Scottish scenery.

An ancient Scottish rock formation said to be the gravesite of a giant remains ensconced in legend and intrigue.

Ancient cliffs resembling a kilt on Scotland's second largest island emit an entrancing sound.

Islanders once used this dramatic, otherworldly landscape to hide their cattle from Viking raiders.

One of the largest underground systems runs under Canada's largest urban center.

An abandoned 1970s theme park that has been turned into a space for waterfront walking.

A tunnel that brings more than a century of history to life from the deepest parts of the Niagara Gorge.

This Niagara Falls tourist trap is a world bright with neon and curiosities that will inspire love, hate, or a mixture of both.

Niagara Falls holds a special place in Nikola Tesla's history, so they put a statue on it.

A century-old prison in the heart of Vilnius is now a lively bar, dance club, and artist residency.

An abandoned masterpiece of Soviet Brutalist architecture.

This once-booming Gold Rush town is now home to a herd of feral donkeys.

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

Scattered throughout London are ancient remnants of the city's former bounding wall.

Since 1887, this old-school shop has stacked its shelves with extraordinary coffees and teas.

These mid-century motels once housed the workers who built the Glen Canyon Dam.

The ghost town that ended up on Ebay.

One of the ghostly stops along Route 66.

This stretch of beach along California's central coast is a busy highway for the largest seal in the northern hemisphere.

This Big Sur waterfall drops 80 feet directly into the Pacific Ocean, and inspired the hillside house up top.

Two rocks in a perpetual kiss and one of "the most romantic spot in America."