Spanish architects used seized Muslim gravestones to rebuild parts of the fortress.

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

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.

A once-secret library of Freemason history in Catalonia.

A temple to modernity, tucked away amid Barcelona's more well known museums.

Turntable anonymously received orphans, alms, and groceries.

The 2,000-year-old Roman columns are hidden within Barcelona's Gothic Quarter.

Bask in the 19th century grandeur of an eccentric Freemason millionaire's private gardens.

An unusual stroll through gentlemen's erotica demonstrates that pornography is timeless.

Mountain where Jesus was first tempted by the Devil.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

A beautiful but toxic fountain of mercury.

This semi-secret storybook hedge maze is also the oldest garden in the city.

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

Despite a legend that says this highest peak in Oregon was climbed in high heels, scores of people have died on its slopes.

This small monument to the great inventor contains a time capsule and a Wi-Fi hotspot.

A humble garage, world-famous for being the epicenter of a technology revolution.

This odd California folly seems like it was almost designed to accumulate urban legends.

A hidden world of exotic succulents and cacti.

This 252 step staircase offers stunning views of San Jose.

Subterranean house made out of a grain silo, located in the Santa Cruz Mountains.

An ominous concrete cube cuts a dystopian silhouette atop this California mountain.

A decommissioned Naval base now rents itself out for people who want to blow stuff up.