A large collection of solar and night-time telescopes dot a small area on the Teide mountain range.

According to the Guanches, the aboriginal people of the Canary Islands, the king of evil lives inside this volcano.

Controversial tribute to the heavyweight champion boxer who grew up in Detroit.

Opulent downtown movie theater now houses cars as an indoor parking garage.

Berry Gordy Jr.'s old home was the original headquarters of Motown Record Corporation.

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

World War II ended before these tunnels built to protect vital oil from Japanese bombs were ever used.

Major tourist destination known for its bubbling mud-pools and hot thermal springs.

The platform atop this verdant volcano was built with the help of a royal elephant.

A New Zealand communications tower stands as the tallest structure in the Southern Hemisphere.

This iconic clock tower is the largest in the Philippines.

An 18th-century battery complete with original kitchen and garrison.

The “Thumb” of Mauritius provides a 360 degree view of the entire country.

This small group of sand dunes manages to pack in a strange rainbow of colors.

A massive trilithon nicknamed "Stonehenge of the Pacific."

A museum now occupies the mansion in Samoa where the prolific Scottish writer chose to spend the last years of his life.

The world is full of swimming holes, but few compare to Samoa’s idyllic To Sua ocean trench.

Home to a timed geyser created by complete accident.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

A colossal floating restaurant built to look like a ancient Chinese imperial palace.

The world's longest outdoor covered escalator system transports commuters through Hong Kong's hilly terrain.

Climb to the top of the world's largest seated bronze Buddha.

Teeming with illegal goods and services, this towering maze of vice is also a popular tourist accommodation.

A 19th-century relic of timekeeping.