This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

The history of sea-faring refuse and disaster is on cramped display in this Netherlands folk museum.

This centuries-old gothic monster has been converted into a sprawling, glossy bookstore.

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

An odd little fishing town that is inundated by tourists looking to be locked up in a cage and surrounded by great white sharks, because why not?

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

The headquarters of the Mahanikai school of Buddhism, Thailand's largest monastic order.

A little sculpture with a large wardrobe.

Oldest Museum of the Netherlands is a true cabinet of curiosities.

Sweden's "good old days" painstakingly re-created in a model village.

It houses the remains of a 17th-century version of the Titanic.

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.

A turn of the century building boasting some of the most beautiful art nouveau architecture in Prague.

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

Macabre astrological automaton clock dating to the late 1400s.

A morbid secret lies hidden within the beautiful walls of the Boston Athenaeum.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

This unattributed sculpture in Amsterdam is hiding in plain sight.

A beautifully eclectic mix of architectural styles.

Established in 1638 to battle the Black Death, Hortus Botanicus Amsterdam is a treasure trove of rare flora.

“Invented in Key West, Perfected in Brooklyn."

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.