A floating cat sanctuary on an Amsterdam canal.

This massive mural by famed pop-artist Keith Haring was hidden for almost 30 years until its 2018 rediscovery.

Crouch down, stretch tall, and be sure to flail your legs to pay homage to the Monty Python classic.

An iconic and eccentric bar for "Manouche" Jazz music keeps expanding its space—and its influence.

The very center of Paris is surrounded by a bevy of strange good luck rituals.

César Baldaccini's iconic sculpture of a 40-foot thumb stands tall in La Défense.

The Lone Star plaque hangs in a bombed-out bunker in Normandy to honor a Texan colonel's heroic actions on D-Day.

Lyon's "Wall of the Silk Weavers" is one of the largest murals in Europe.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

An ancient Egyptian temple in the middle of Madrid, Spain.

The sculptor was instructed to add “stallion attributes” to the general's bronze mare.

Surrounded by a verdant garden and a backdrop of ivy, a monument to beloved poet Khalil Gibran stands outside of the Lebanese embassy.

This 20-story artwork on a public housing block is the tallest mural in the Southern Hemisphere and tells the story of a community.

From the late 19th century until the 1960s, these stone-lined "stumps" were a popular place for people to air their views on local and international issues.

This funky former tobacco factory is one of the most striking examples of Madrid's cultural diversity.

This historic boathouse was constructed using salvaged lumber from burned barns.

World's first "penitentiary," meant to be humane, drove men insane.

Washington D.C.'s most famous pianist, composer, and bandleader still tickles the ivories outside Howard Theater.

An ornate and disused early 20th-century building has been given new life as a fully operational structure, complete with offices, oyster bar, and a furniture retailer.

The world's oldest soul food restaurant is also one of its best.

This shale formation along the Appalachian Trail once inspired the third president of the United States.

One of the first Second Empire-style buildings constructed in North America.

This former coal gasification plant found a curious second life as a popular public park.

These unusual rooms on wheels are holdovers from the 1960s.