An ancient Egyptian temple in the middle of Madrid, Spain.

A New York–based physician returned home to Spain to build his own elaborate monument to Christopher Columbus.

The discovery of these rare, ancient artifacts led to the creation of a new museum.

The current seat of the Parliament of Andalusia was once the epicenter of the Great Plague of Seville.

The Roman city was the birthplace of various emperors and is home to one of the empire's most impressive architectural feats.

An eerie collection of the surviving structures from a past celebration of the future.

A 16th-century Andalusian palace.

The world's largest wooden structure.

The fierce beast perches atop a pedestal marking where the historic City of London gates once stood.

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

Rebuilt remains of a temple to Roman god Mithras.

A museum dedicated to one of Paris’s most famous residents, tucked into a corner of one of the city’s most famous squares.

The great Italian Renaissance painter was laid to rest here in the Chapel of Saint-Hubert.

In 1927, a biplane disappeared while attempting to complete the first non-stop transatlantic flight between Paris and New York City. This memorial stands at the last place it was seen.

The cellar of a former factory is now home to a collection of gloves, machines, and tools of the trade.

What if all public housing projects had been designed by "the Pygmalion of modern architecture," not only their prototype?

Sky ships, planes, and portraits left as unique tokens of hope and thankfulness.

This garden houses the remains of the ancient Greek port of Marseille.

This modern museum of Mediterranean culture is surrounded by a surreal concrete honeycomb.

Beneath the city of Lourdes, France is a massive, concrete church.

The oldest operating roller coaster of its kind, the Montaña Suiza has been thrilling riders since 1928.

Giant topiary dog once played a role in a terrorist bomb plot.

Spanish religion mixed with local architecture has yielded a network of churches unlike any other.