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.

This Gothic castle-like portal is a testament to the amazing craftsmanship of the navvies who built the railway tunnel.

Artists have long been drawn to these atmospheric 12th-century ruins.

This Victorian graveyard in Leeds is a macabre collection of beautiful tombs and memorials.

These medieval monastery ruins are surprisingly overlooked by most tourists.

A tiny chapel perched along a 14th-century bridge.

The largest preserved walking dragline excavator in Western Europe.

This memorial to World War II's fallen airmen shows us the movements of the stars that once guided them.

The little-known second castle that William the Conqueror built in York.

This disused Cold War bunker has been restored to all of its early 60s glory.

An incredibly well-preserved piece of ninth-century Viking poop.