Hidden along this old street in Antwerp is a surreal monument of a bronze arm sprouting four hands.

A man throwing a giant severed hand towers over Antwerp’s main square.

A beautifully preserved and hidden 16th-century alleyway, tucked behind an unassuming door.

Climb inside an iron crystal magnified 165 billion times its normal size.

Lavish royal estate punctuated with heated greenhouses.

This conceptual artwork might be the most disappointing attraction in Brussels.

The original shop where the iconic Belgian praline was invented.

A shining memorial to a Belgian hero is said to bring luck to anyone who touches it.

Three floors of musical instruments coming from all corners of the world and hundreds of years of musical history.

Where a cross marks the spot King Albert I’s body was found on 17 February 1934.

Freemasonry’s universal creed etched in limestone.

Krakow's own version of the Hollywood Walk of Fame.

Seven dragon statues—including one that breathes real fire—are scattered throughout the streets of Krakow.

In the midst of a living monument to Soviet social engineering, Polish Catholics built this church by hand.

This sprawling concrete suburb of Kraków was designed by the Soviet Union as the model proletarian city.

An underground city of salt.

Modern art commemorates one of the first military actions of World War II.

Memorial to the lost dead of Gdansk, whose resting places were destroyed during World War II.

A relic of Poland's shipbuilding past, reborn as a sky-high lookout.

This fairytale inspired, warped building houses restaurants, shops, and a radio station.

One of the world's largest amber altarpieces is housed within this reconstructed medieval church.

This antique thermometer honors the creator of the first universal temperature scale.

A merchant court dedicated to the fictitious King Arthur is heavily adorned with bizarre Renaissance art.

These rare statues are one of the few remaining material witnesses to Old Prussian culture.