Places poppyhuskisson Wants to Go

A curious carving hides on a marble column in the Mosque-Cathedral of Córdoba.

An exact replica of a colossal Olmec head sits atop a pyramid within a Madrid traffic circle.

The oldest Roman lighthouse still in use.

The little church's beautifully frescoed ceiling has earned it the nickname “the Sistine Chapel of Madrid.”

A site where “the ravages of the war are more striking…than any other place in contemporary Spain.”

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

Cursed swimming pool left abandoned is now a favorite of filmmakers and ghost hunters.

A once grand hotel now sits eerily abandoned in the Catalan countryside outside Barcelona.

The studio of Catalonia's most famous theatrical designer remains exactly as he left it.

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

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

This mosque was based on Sub-Saharan Islamic architecture and created for the Senegalese Tirailleurs.

The remains of this ornate chapel now act as a portal to a cramped French cemetery.

This bunker in northern France was built by Nazi German forces with the intention of launching up to 50 V2 rockets at London each day.

A medieval church built into an ancient cave.

A 13th century fortified house built to defend the Duchy of Burgundy.

Immortalized by artists, this church incorporates a medieval lighthouse into its shoreside structure.

A towering baroque basilica jutting out of the French countryside.

A beautiful lighthouse with as many steps as days in the year, as many windows as weeks, and as many levels as months.

Now a memorial, this factory was once used as a concentration camp for artists by the Vichy government.

The remains of this castle, known as the Witch’s Eye, watch over the Thur Valley.

Limestone grottoes turns everyday objects into stone.

A crumbling island fortress that seems to be covered in a field of stone crosses but is simply incomplete.

The eclectic observatory castle of a 19th-century astronomer and explorer.