A modernist landscape of water and sci-fi concrete.

An emerald-green grotto just a short trip from Austin.

Breathtaking and huge 430 year old maps of Italy.

These spartan apartments are provided to clergymen visiting Vatican City.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

Send a postcard while vacationing with Satan.

Known as one of the most famous parks in Honduras.

A massive underwater sinkhole made famous by Jacques Cousteau.

An island graveyard with spectacular views of the Caribbean.

A magnificent waterfall is also home to the remains of a Roman hydraulic engineering system.

A Nesting Doll of Churches.

The yawning maw of this pagan visage is said to bite off the hands of liars.

This unique building in the main square stands out among the city's typically Baroque architecture.

This statue of the great Argentinian car driver is located near a famous curve of the Monaco Grand Prix.

An Orthodox church built by the Royal Family for the Russian community exiled to the French Riviera.

This ancient Irish tower could easily have stood in for Rapunzel's prison.

An ancient neolithic tomb that only sees the sun twice a year.

The comedy and tragedy of Oscar Wilde is preserved in a Dublin park, captured in a sculpture of colorful stone.

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

A quirky bookstore hidden beneath a sea of whitewashed Greek villas.

This black sand beach was crafted from volcanic explosions including the historic Minoan eruption.

Legend says this sacred tree was a gift from goddess Athena.

Heralded as the world's first theater, these ruins are often overlooked as they reside in the shadows of the Acropolis.

This beautiful, historic church looks like something out of a simpler past.