These temples are among the oldest free-standing stone buildings in the world.

At more than 5,000 years old, these structures are among the oldest free-standing stone buildings in the world.

Overshadowed by other, more famous Maltese catacombs, this ancient burial chamber has one of the best examples of a ritual agape table.

This Stone Age solar temple aligns with the sun on each equinox and solstice.

The embalmed remains of the communist leader lie within a custom crystal coffin.

The once highest point in China blends symbolic design with a kick of adrenaline.

The world’s tallest outdoor lift stretches along the stone pillars that inspired the floating mountains in the movie “Avatar.”

The latest in a series of long glass bridges suspended at terrifying heights.

The most famous location in China was home to whole dynasties worth of imperial rulers.

This vertical pinnacle in China was the inspiration for the floating mountains in the movie “Avatar.”

A vast Communist-era exhibition space in the Bulgarian capital.

This once-grandiose behemoth of a monument from the socialist era now sits quiet and closed up.

A striking symbol of the Bulgarian capital.

A Bulgarian monument to Russia's role in World War II is constantly being painted in pop culture protest.

There is only one place in the world where the corners of four nations come together.

This statue honors the Philippine warrior who repelled a foreign invader and prevented Ferdinand Magellan from circumnavigating the globe.

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

Hidden deep within a Filipino jungle is an incredible waterfall that plunges into a dazzling blue-green pool.

The defense built to protect one of the last found pieces of land on Earth.

Step back in time at this 19th-century kiosk.

Africa's own Christ the Redeemer looks over Angola's second largest city.

One of Africa's windiest and most scenic roads is a national symbol of Angola.

These giant volcanic rocks towering above the Angolan savannah once served as a natural fortification.

Striking, enormous gold-plated sculpture of Buddha installed in the 19th century.