At least according to the Guinness World Records.

One of the most important Celtic-Roman archaeological sites in Spain.

This piece of early engineering is rather unknown despite its location in the heart of Madrid.

Madrid's last horchata kiosk is a blue-and-white beacon of refreshment.

One of Madrid's oldest trees, with a long and colorful history, resides in El Retiro Park.

Inside this church are the alleged remains of the patron saint of lovers, epileptics, and beekeepers.

A masterpiece of Rationalist architecture in the center of Madrid with lizards on it.

Known as the Casa de las Siete Chimeneas, this haunted 16th-century manor has a dark, mysterious past.

Once a resting spot for King Fernando VII.

One of the best examples of the modernist movement in Madrid.

This embalmed man is one of the best preserved mummies from the Canary Islands.

This enigmatic Iberian sculpture of uncertain origin may have once guarded a burial site.

This enigmatic artifact is a rare depiction of an ancient Iberian noblewoman.

A reproduction of the famous prehistoric cave paintings is hidden underground at the National Archaeological Museum.

These ancient artifacts are a testament to the enduring significance of the bull in Spanish culture.

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

An open-air sculpture museum in a park in Alcorcón.

The best collection of Mudéjar building replicas gathered in a theme park in Olmedo.

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

Kingly French toast comes soaked in milk or red wine, then drizzled in a citrus-perfumed syrup.

This open-air sculpture museum is located under a bridge in the center of Madrid.

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

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

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