Caves that can't seem to quit producing the remains of prehistoric humans.

Home to some of the oldest hominid fossils ever found.

Mined to a depth of 240 meters with a perimeter of about 1.6 km, the largest hand-dug excavation in the world.

The tallest residential building in Africa is an unsettling Brutalist monolith.

Largest cave system in Africa.

Formerly known as the Malay Quarter, Bo Kaap is a colorfully-painted suburb located in the “Mother City” of South Africa.

Raging waters have created a strange geological site that looks like something off of a progressive rock album cover.

The peaceful space is adorned by paintings by the famed abstract artist Mark Rothko.

Beer lover's can-covered house.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

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

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

The wooden telephone box hidden away in London's Piccadilly was the original prototype of the iconic kiosk.

Giant, friendly pelicans in Central London, the most unlikely of places.

One part local history, 99 parts gruesome haunted house.

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

At the crypt of St. Mary of Eulogies and the Dead you are left alone to ponder mortality among piles of skulls.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

One of the largest underground systems runs under Canada's largest urban center.

Join the circus for a few lessons to learn clowning, acrobatics, and Chinese contortion.

This infamous prison has a store where you can buy goods crafted by incarcerated people.

Since 1973, this block has been home to the most concentrated collection of murals in San Francisco.

Alleyway plaque commemorating the death of a fictional character in The Maltese Falcon, not far from the author's home.

Golden Gate Park's historic collection of plants.