This picturesque horseshoe weir was first built in the 1600s to prevent flooding in the town of Bath.

Created by one of England's most prolific labyrinth designers, inspired by Bath city history.

This Roman amphitheater is said to be King Arthur's legendary Round Table.

High Victorian fantasy created a fairytale castle out of a ruined fortress in Wales.

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

Visitors are welcome to enter this lush Key West sanctuary to entertain its plethora of rescued parrots.

A monument celebrating the idea of reaching inaccessible places.

With 3,000 bikes on display, the world's largest bicycle museum includes some famous rarities.

A restored Pittsburgh house of God has been converted to a marvelous house of suds.

Found art has transformed this Pittsburgh neighborhood into a psychedelic dream.

The only way to see Pittsburgh is from the top of this lookout point, just like the ancient members of the native peoples did.

"We gonna rock down to Electric Avenue, and then we'll take it higher..."

A musical composition 1000 years in length plays at the Trinity Buoy Wharf in London.

A historic London pub with prison cells in the cellar and a "spy room" on the second floor.

This 19th-century pub features stained-glass windows celebrating Victorian-era "champions."

The "beautiful" equation predicting the movement of all electromagnetic particles is engraved in front of Newton's tomb.

A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.

One of the world's largest collections of pathological specimens.

A recently restored Shoreditch landmark with ties to Jack the Ripper.

Banksy gives themself artistic license with this piece of London street art.

Artists and musicians now rule over this former rail station.

A neo-Gothic church built to thank God for saving the Emperor of Austria from an assassination.

A patriotic medieval knight in driven-nail armor raised money for widows and orphans of WWI.

This museum promotes informed contraception by documenting its often secret past.