This fortress dates back to the 6th century and is also the site of a controversial abandoned restoration project.

This memorial park stands on the site of one of the largest mass executions of the Second World War.

Nikola Tesla's ashes are held in a golden sphere, surrounded by his works.

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

This cemetery features modernist statues as strange as its name.

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 Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

The world's oldest bookshop still in operation.

This statue was given to France by the United States to commemorate the centennial of the French Revolution.

Paris' linguistic guide to the international language of, yes, love.

An exploration of Malaysian heritage through the lens of traditional textiles.

Malaysia's floating mosque.

Holy Hindu shrine in an enormous, monkey-filled limestone cavern.

This $62 million dollar temple was erected to house one little dental fragment of religious history.

Singapore's landscaping project is home to 18 incredible Supertrees.

A shrine built to combat the bad karma of a commercial venture.

A forest of phallic offerings found in a quiet corner of a hotel car park.

A white Buddhist temple with a golden restroom.

The second largest reclining Buddha in the world got "lost" for over 120 years.

A series of tiny artificial islands rich with produce bob atop the surface of the lake.

A vast, otherworldly collection of Buddhist stupas.

This golden temple is surrounded by hundreds of stone tablets that comprise the "world's largest book."