An architect transformed this abandoned cement factory into his castle-like workshop.

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

Bacteria and algae give the salty water its bubblegum hue.

A lush indoor jungle fills this bustling Madrid transportation hub.

An ancient Egyptian temple in the middle of Madrid, Spain.

Mountain where Jesus was first tempted by the Devil.

Step inside the first house designed by Catalan architect Antoni Gaudí, considered to be one of the first Art Nouveau buildings.

This cemetery features modernist statues as strange as its name.

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

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

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.

A collection of over 20,000 priceless artifacts collected by a single person over several decades.

This 19th-century heritage building once housed a department store that supplied British provisions in the city.

A tribute to the area's namesake and King Edward VII.

A sandstone lamp post in Mumbai's business district honors the war efforts of the Port Trust and its employees who fell during World War I.

A combination of Peshwa and British Gothic Revival architecture.

Designed as a 17th-century watchtower, the former fort is now a popular sunset haunt.

An 18th-century fort in the business district of Mumbai.

This 15th-century mosque is a beautiful blend of Hindu and Islamic architecture.

This 16th-century mosque is the hallmark of the African architectural legacy in India.

World's most expensive home.

This opulent 16th-century Maharaja’s palace is a unique mix of Hindu and Muslim designs.

An imperial fortress city that incorporated cultural elements from the entire Mughal empire, only to be abandoned the year it was finished.