Liechtenstein's royal family calls this medieval alpine castle home.

The oldest surviving wooden bridge over Rhine lets travelers cross easily from Switzerland to Liechtensten.

A lakeside footbridge that records Nobel Prize laureates' names in metal silhouette.

A once grand hotel now sits eerily abandoned in the Catalan countryside outside Barcelona.

Construction of Barcelona’s iconic (but controversial) church was finally completed in 2026—a century after the death of its architect.

The unexpectedly beloved remnants of a controversial thermal power plant.

A 9 year-old boy’s elaborate cardboard arcade in his father’s used auto parts store.

A beloved carnival gets a modern makeover in Los Angeles.

Crypt mausoleum in cathedral's basement contains relics of third century Roman martyr, Saint Vibiana.

A visionary, futuristic sculpture in Los Angeles that never met its extraterrestrial potential.

Inside this library, the history of Los Angeles is retold through a mural.

This former outpost was designed to protect the lucrative fur trade of the 18th century.

An unassuming music museum recounts the rags to riches story of a dramatic Portuguese genre.

Portugal's National Pantheon has a history of curses, collapses and financial problems.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

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

A beautiful but toxic fountain of mercury.

A cemetery in Barcelona's Poblenou district is home to this touching funerary statue, which depicts death in the form of a winged skeleton.

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

This cemetery features modernist statues as strange as its name.

Τhis feline monument commemorates fallen soldiers on a field that saw many, many battles.

The hallucinogenic center of the ancient world.

According to legend, this cavern holds the passage that Persephone used to travel to and from the underworld.

Jesus' footprints and the first catacombs in the world.