Dolphins, ancient clams and hundreds of waterfalls make this one of the world's top tourist destinations.

In the days before house numbers, these colorful signs held clues about various buildings' purposes.

Amsterdam's former hotspot for public executions and dissections.

One of Amsterdam's narrowest houses is located right across the canal from its widest.

This unattributed sculpture in Amsterdam is hiding in plain sight.

One of the two original gateways into the Kasbah, this gateway is a nesting site for storks.

This vast masterpiece of Moroccan architecture spreads across 20 acres.

Deliberately hidden for centuries, the magnificent Saadian Tombs were eventually uncovered in 1917.

The largest madrasa in Morocco once housed more than 900 students within its exquisite walls.

Fortune tellers, snake charmers, poets, and storytellers all gather on this historic square in Morocco.

These historic defenses ensured the city within would survive hundreds of years of occupations, sieges, and invasions.

This statue of the great Argentinian car driver is located near a famous curve of the Monaco Grand Prix.

The cell which saved the life of Ludger Sylbaris, "the man who lived through Doomsday."

This church is named for one of the most dramatic tales in the early Christian church.

Dynastic Home of the De Piro Family.

The floor of this spectacular Baroque sanctuary is covered in memento mori.

An abandoned set from the 1980 film "Popeye," claimed and repurposed as a theme park by creative locals.

Cartoon clouds and nature-inspired murals have transformed the streets of Kuala Lumpur.

These abundant, over-the-top monuments are so widely scattered that they define the entire compact capital cityscape, often leading to jokes about whether there are more statues than residents.

In the hometown of the Catholic saint and Nobel Peace Prize winner, a memorial dedicated to her legacy.

This fortress dates back to the 6th century and is also the site of a controversial abandoned restoration project.

Some believe that the artist behind this whimsical statue inserted his own likeness as a way to discreetly flip the bird.

Statues of a fire-breather, a clown, and a whole performing troupe celebrate Luxembourg's creative side.

A miraculous three-handed portrait of a saint can be found inside this church.