Calcium-rich water has turned the water and rocks of these Philippines falls slightly green.

The first religious structure on the island of Luzon and a survivor of World War II.

A monument dedicated in memory of the over 100,000 civilian deaths during the liberation of Manila in World War II.

Once a crime hotspot, this refurbished underpass is now home to a bookstore and a mural celebrating the history of Manila.

This historic Art Deco building embellished with local tropical fruits had fallen into disrepair before a recent restoration.

The first building in the Philippines with an elevator.

5,000 skulls in memorial to those killed by the Khmer Rouge.

A phallic shrine to a princess goddess in Krabi, Thailand.

This nugget of paradise earned its name for obvious reasons.

In one of the smallest countries in the world stands an original Salvador Dalí sculpture.

This Soviet statue is based on a piece of propaganda that's been elevated to national myth.

Beatlemania is still going strong... at least in Kazakhstan.

Controversially restored in the 1970s, this giant 15th-century mosque is shrouded in legend.

An underground world of gorgeous, palatial metro stations designed as a nuclear shelter complex.

Once a luxurious flagship of the Soviet Union, this Brutalist structure remains a landmark of Tashkent’s communist past.

This retro, UFO-like structure is a remnant of the Soviet-era circus.

A marvel of Byzantine engineering under the streets of Istanbul.

See how paper is made the old-fashioned way.

This World War I fortress is the perfect place to catch a Montenegrin sunset.

A curious little museum dedicated to the furry feline in the cat haven that is Old Town Kotor.

These historic defenses ensured the city within would survive hundreds of years of occupations, sieges, and invasions.

According to a local legend, this old castle could only be built after a woman was immured in the walls.

The best place for scenic views of the DMZ and North Korea.

Secret North Korean passage discovered below the world's most dangerous border.