The world's most elegant power lines.

A historic neighborhood church is reborn as a psychedelic arts collective.

Single runway interrupted by a busy road that cuts across its middle.

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

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

Three bridges and one giant canyon make up this fantastic Spanish settlement.

This historic electric train has operated with regularity since the early 1900s.

A lush indoor jungle fills this bustling Madrid transportation hub.

The largest cemetery in Chile is the final resting place for more than 2 million people, from politicians to artists.

Roman ruins top white travertine terraces formed by ancient hot springs.

An ancient necropolis of magnificent tombs.

Once part of an ancient international harbor, it's now an all-you-can-eat shrimp buffet for flamingos and other water birds.

This wildlife refuge is home to more than 200 species of birds, as well as monkeys, lizards, and other wildlife.

A huge, bustling local market in Panama City.

Latvia's symbolic mountain-shaped national library is home to millions of cultural tomes.

The oldest housing complex in Riga is a mini timeline of architectural trends.

Disused seaplane hangar gets a second life as the jaw-dropping home of Estonia's museum of maritime history.

A merchant court dedicated to the fictitious King Arthur is heavily adorned with bizarre Renaissance art.

St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

Real bones which are said to have belonged to a Polish dragon.

A collection of old neon signs from all over Poland line a secluded courtyard.

Two stunning 17th-century libraries and a cabinet of curiosities.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

A minotaur, a labyrinth, and a dubious restoration pull in visitors from around the world.