Colorful and chaotic stacked hotel in North Holland.

The place where Czar Peter I of Russia resided in 1697 during his Grand Embassy.

This 1920s Amsterdam neighborhood was built as a giant experiment in concrete construction.

The attic of a four-century-old canal house hides a clandestine church.

This virtually windowless mass of smooth concrete is the only Catholic church in the city.

Its frescoes depict the likeness of Marshal Tito, Karl Marx, and Friedrich Engels burning in hell.

This Stone Age solar temple aligns with the sun on each equinox and solstice.

Burial grounds for more than 1,000 bodies deep under the modern town of Rabat.

The remains of a 1st-century aristocratic Roman town house featuring beautiful well-preserved mosaics.

This unique building in the main square stands out among the city's typically Baroque architecture.

A World War II-era sign in Valletta is a reminder of when Malta was besieged so severely that food needed to be rationed.

After 400 years of being closed to the public, this monastery's underground tunnels and secret garden are now a museum.

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

Valletta’s outdoor theatre stands within the ruins of a 19th-century opera house.

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

This garage is frozen in the late 1990s, full of rare and untouched cars and motorcycles.

This spectacular dome managed to survive after being bombed in World War II, in an event known as the "Miracle of Mosta."

Malta’s oldest sea water distillation building is now an architectural anomaly on the Sliema waterfront.

Despite the name, these small saltwater swimming pools have nothing to do with the Romans.

From Tintin to the Smurfs, Europe's greatest graphic icons are celebrated in a grand Art Noveau gallery.

In the middle of a Brussels roundabout, a cargo container balancing on its edge.

When you're a great Russian Tsar, even your vomit gets a statue.

Brussels' favorite peeing boy has a sister.

Cozy basement bar sports an inventory of over 2,000 beers.