Iconic red and white plaques show the creative names invented to navigate the city streets.

Psychedelic murals coat the inside of a nondescript research library.

A trompe l'oeil mural remembers the original colonial building that once stood here.

A scientific repository of goiters, boils and other ailments throughout Mexican history.

This foreboding building was the headquarters of the terrifying Spanish Inquisition in Mexico.

This mosaic made out of books represents one of Colonial Mexico's most important literary figures.

A disquieting Aztec sculpture displays hundreds of stone skulls representing the victims of human sacrifice.

Get a privileged view over Mexico City's Historic Center from a terrace right in its heart.

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

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

A place steeped in history that may be best known as the set of a 1960 film.

Visit the grave of a famous feminist author and the mother of Mary Shelley.

Several colorful mosaic panels depict the life and creative genius of the Master of Suspense.

A beautiful little museum hidden away in the heart of Barcelona holds a treasure trove of Ancient Egyptian artifacts

One of Antoni Gaudí’s earliest buildings, built between 1886 and 1890 for the industrialist Eusebi Güell.

This stone spire holds a unique place in the region's history.

This quirky UFO-shaped curiosity is often mistaken for the airport’s control tower.

Historic funicular railway, believed to be the shortest railroad in the world.

Crypt mausoleum in cathedral's basement contains relics of third century Roman martyr, Saint Vibiana.

A sign at the end of the Santa Monica Pier marks the traditional end of the legendary American highway.

This jagged colossus of a building is mostly held together by an enormous concrete exoskeleton.

The Hopi-style structure was built by the man who discovered Desert Hot Springs' famous mineral water.

You don't have to be a diplomat to visit the so-called Camp David of the West.

On a barren hillside in the Yucca Valley, the recently restored Desert Christ Park has attracted pilgrims and kitsch hunters for over 50 years.