The oldest restaurant in the world is this old-world Spanish eatery, still known for its suckling pig.

For more than half a millennia, this automaton has rung an hourly bell.

This magnificent brick dome was made with an unusual design method.

An out-of-place grove of sequoias thrives in northern Spain.

An accidental trick of light casts the perfect shadow of a pilgrim of the Camino de Santiago against the cathedral wall.

Thanks to an acoustic anomaly, this unassuming stone bench has heard one hundred years of secrets.

Saint Joseph was said to heal the deaf and blind, but it was a much smaller miracle that got him canonized.

The unexpectedly beloved remnants of a controversial thermal power plant.

This home designed for chocolate magnate Antoni Amatller is an exquisite treasure-box of Catalan Modernism.

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

The largest Art Nouveau complex in the world is a Barcelona hospital with a 600-year-long history.

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

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

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

An eclectic collection of thousands of items owned by the sculptor Frederic Marès.

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

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

On the wall of this medieval square, a symbol of the Spanish Inquisition.

This former Baroque palace on the historic Calle Montcada is a rare architectural gem and was once the meeting place of an aristocratic scholarly society.

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.

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

The final resting place of the great navigator, or maybe his brother.

Just outside the Ohio Supreme Court sits a testament to justice.