A complimentary beverage is offered to the bodega's resident rodents every day.

Spain's unique Mosque-Cathedral has been a place of worship for both Muslims and Christians throughout its history.

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

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

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

Spanning the El Chorro gorge, this pathway used to be one of the most dangerous crossings in the world.

A mud statue stands in the dark tunnels, seeming to hold up the weight of the city above.

This demon atop the Notre-Dame de Paris looks utterly bored.

A series of abstract, silly sculptures represent the works of a great modern classical composer.

This statue was given to France by the United States to commemorate the centennial of the French Revolution.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

19th century pendulum and a clock restored by a rogue group of guerilla artists.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

The largest library in Latin America owes its existence to an Old World earthquake and a Napoleonic invasion.

This stunning Brazilian library contains the largest collection of Portuguese texts outside of Portugal itself.

Beautiful public park off the beaten path and away from tourists.

This massive Brazilian church is built like an angular, technicolor pyramid left by Mayans from the future.

This intriguing Bronze Age artifact spent centuries hidden within a Welsh faerie hill.

A measuring mishap led to these artificial stone ladies losing their stomachs.

A labyrinth hides in plain sight at each of the city's 270 Tube stations.

The "lost friend” is the most famous of the six moai statues that were removed from Easter Island.

The Tudor-style cottage in the middle of the square is not quite what it seems.

Charles Babbage's proto-computer, painstakingly brought to life.

This beautiful deer park was built so King Charles I and his court could go hunting while escaping a deadly plague outbreak.