This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

A monumental fountain in Rome features a large statue of Moses that has been criticized for centuries.

Its interior is adorned with some of the best examples of early Christian mosaics.

Jesus' footprints and the first catacombs in the world.

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

Original cabaret handbills, posters, and feline artwork are a purrfect highlight of the Museum of Montmartre.

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

Spain's unique Mosque-Cathedral has been a place of worship for both Muslims and Christians throughout its history.

Spanish architects used seized Muslim gravestones to rebuild parts of the fortress.

The gardens and chambers of this Moorish citadel conjure memories of the Alhambra.

This Moorish fortress has guarded Málaga from the slopes of Gibralfaro hill for nearly a thousand years.

A 16th-century Andalusian palace.

The world's largest wooden structure.

The final resting place of the great navigator, or maybe his brother.

This former Masonic hall has been turned into an art project that uses even more metaphysical iconography.

The thousands of shades on display — some toxic, others impossibly rare — are a library of more than just color.

The statue of John Harvard isn't actually John Harvard—or even, technically, the founder of the school.

An alley way dedicated to graffiti and street art is a constantly changing street gallery.

This bridge was the birthplace of a unit of measurement based on a fraternity joke.

A three-piece musical sculpture installed between the subway tracks at Kendall Station near MIT.

No one messes with the Massachusetts sacred cod, not this time...

One of the oldest used bookstores in the U.S. has been selling antiquarian treasures since 1825.

This bronze sculpture was inspired by a photograph of Martin Luther King Jr. and his wife embracing after he won the Nobel Peace Prize.

Home to a vast and influential collection of Shakespeareana.