Despite attempts by local police to discourage it, Beatles-inspired graffiti has been a means for artists to air grievances for decades.

These azure waters were thought to lead to the Mayan Underworld.

The youngest volcano in Central America.

Museum deep in the catacombs of St. Michael the Archangel Church is explored by touch, sound, and smell.

Superstitious? Discover the witchy side of Mexico through its largest esoteric market.

Macabre astrological automaton clock dating to the late 1400s.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

A flourishing garden with pigs, donkeys, goats, rabbits, guinea pigs, chickens, ducks, and sheep.

The Columbia Road Flower Market is now open every Sunday, rain or shine.

Once a train station along the Great Eastern Railway this vibrant coffee shop and bar is where members of London’s creative class mingle.

Holy Hindu shrine in an enormous, monkey-filled limestone cavern.

A Parisian cemetery where the elite and artistic are interred beneath an eccentric collection of tombs.

London's most popular recording studio, located in the capital's East End, runs partly on solar power and has played host to some of the world's biggest acts.

A five-story homage to tea times past.

A massive art collective tries a new take on Brooklyn's DIY music scene—by making it fully legal.

A church of bones, decorated with 40,000 human skeletons.

Museum celebrating the ocean, with the largest wunderkammer dedicated to sea exploration.

A 14th century bridge built as a fortress, where the devil lurks on one of its towers.

A community of artists and entrepreneurs seeks a simpler life on London's waterways.

This was once the center of the Birdman cult, and is now a World Heritage Site.

The largest stone moai on Rapa Nui.