Earth's rocky history has rarely glittered so brightly as it does in this Spanish museum.

This sweet-toothed bear searching for snacks has been a symbol of Madrid for decades.

Among the oldest structures in Madrid, these Moorish walls once guarded the medieval city of Mayrit.

This lucky bronze frog was gifted to Madrid by a casino.

This macabre masterpiece of a mural is one of Francisco Goya's "Black Paintings."

The only urban monument in the world designed by the great surrealist painter Salvador Dalí.

Over two centuries old and counting, Madrid's massive botanical garden contains one of Europe's only desert environments.

Commonly acknowledged as the only public monument to the Devil himself.

A lush indoor jungle fills this bustling Madrid transportation hub.

An ancient Egyptian temple in the middle of Madrid, Spain.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

An iconic British fixture in an unconventional color.

Since 1768, the pillar at Guildhall Market in Bath has been a hub of economic transactions.

In addition to escorting prospective couples to and from ballrooms, this lane was also a place for gentlemen to settle scores.

This restaurant's specialty is "a major enigma for food historians."

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

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

This pedestrian footbridge honors Pero Jones, an enslaved African who lived in Bristol.

Designed to celebrate the queen's 40th birthday.

After protestors toppled a statue of a 17th-century slave trader, the pedestal where it once stood remains unoccupied.

An ornate doorway leads to the former site of one of the city's oldest society of merchants.

An alchemical monument that represents "Earth, Air, Fire, and Water."

Perhaps the most obscure, simplistic Banksy installation found in Bristol or in the entire world.

A 142-foot-tall Q-tip on Bristol's skyline.