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

This former charity hospital for elderly clergy houses some of Seville’s most treasured paintings.

Spain's largest bullring offers a unique glimpse at architecture and history.

The world's largest wooden structure.

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

The 20th-century church looks like a rustic version of the Sagrada Familia.

This ancient fort has been a great insight into the Roman presence in the region.

A well-restored ancient archaeology site gives a real feel for life during the Roman age.

A celebration of solstice followed by a fiery purging of evils.

Legends surround this natural rock formation that looks like a Moorish king wearing a crown.

Once used to calculate the various levels around the country.

A monument at Alicante Marina honors a little-known hero of the Spanish Civil War.

Fascinating exhibits of prehistoric and ancient artifacts displayed with a uniquely modern touch.

This magnificent market stands as a poignant symbol of the suffering caused by the Spanish Civil War.

This stunning iron gate designed by Modernist architect Antoni Gaudí is filled with mythic symbolism.

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.

A mocking tribute to the past and modern leadership of Prague.

Despite attempts by local police to discourage it, Beatles-inspired graffiti has been a means for artists to air grievances for decades.

A steampunk-styled three-floor factory churning out art, activism, and electronic beats.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

Macabre astrological automaton clock dating to the late 1400s.

This easily overlooked memorial immortalizes the scars from the 1956 Hungarian Revolution.