Barça football fans might see the insignia hidden in a church window as a divine sign.

This fountain was designed to honor the man who helped bring water to Barcelona.

Possibly the oldest church in Barcelona, this basilica has its pagan and Christian mythologies all mixed up.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

One of Antoni Gaudí’s earliest buildings, built between 1886 and 1890 for the industrialist Eusebi Güell.

An open-air "garden" of mural art that changes weekly.

This stunning iron gate designed by Modernist architect Antoni Gaudí is filled with mythic symbolism.

A gravity-defying "devil's bridge" that has a surprising architectural feature for its stability.

Holy Grotto of Montserrat Monastery holds one of Europe's mysterious black Madonnas.

This narrow Ghent alleyway is an officially sanctioned street art tunnel.

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

An unsettling sculpture of a boy hanging out in a street in Ghent has been baffling visitors for years.

The compass on its front was a handy tool for 17th-century merchants who needed to know the direction of the wind.

A piece of stonework relief commemorates the site where the Devil's rage, and odd apparel, destroyed a house.

Christ's blood allegedly preserved in a Belgian town.

You can spot this teeny tiny stained-glass window from the Bonifacius bridge.

A beer pipeline runs beneath Bruges.

Also known as Napoleon's Canal, this waterway was created on the orders of the general, and construction was interrupted by Waterloo.

Meet the bronze beloved pet to a family of famous peeing statues.

This modern arts center is built around a gem of late-Baroque architecture.

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

Intricate metal sculpture that's half gothic cathedral, half construction equipment.

A fantastical 13th-century fortification sandwiched by a modern hotel in central Brussels.

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