A spur fit for a giant sits just off Highway 281 in Texas.

These otherworldly caverns form Earth's oldest known cave system.

Many rock climbers have come to conquer this slender sea stack, with various degrees of success.

It's home to the antenna that received the first images of Neil Armstrong walking on the moon.

With a surface area of nearly 500 square meters, welcome to the world's largest paraboloidal dish solar concentrator.

This risky summer festival honors a historic volcanic eruption.

It's where the final scene of the beloved Tom Hanks movie was filmed.

There's a lot of horsing around on this lonely stretch of Australian highway.

An unexpected and peaceful oasis on a hillside.

This no man's land slicing through the island is strewn with abandoned relics of another time.

This lesser-known geographic marker was the reference point for all surveys of the continent for 75 years.

This Bangkok high-rise looks like a rudimentary LEGO elephant.

This vessel is believed to be the oldest operating fireboat in the world.

At 16,627 feet above sea level, this unstaffed station is the highest in the world.

Worship at the altar of seafood at this fish-and-chip shop housed inside the town's oldest stone church.

An island off the coast of South Australia is home to the last purebred Ligurian bees.

This impressive working clock made of 16,000 plants changes its flowers twice a year.

Many people don't realize there’s a lot going on in—and below—the world’s tallest triumphal arch.

"The only replacement for a DC-3 is another DC-3."

Santa Monica's oldest restaurant, decorated with set pieces from the Mutiny on the Bounty.

A Serbian church lit by chandeliers made of weapons.

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

The Cuban revolutionary looks over the country from its highest peak.

One of the oldest baseball fields in continuous use has been hosting games since 1878.