A popular swimming hole that hides one of America's most deadly diving spots.

Over 100 million years ago, beach-bound dinosaurs left permanent marks on San Antonio's landscape.

Water still flows through the oldest Spanish aqueduct in America.

Craggy concrete faces are hidden in the walls of this artificial cave along the San Antonio River.

Colorful curls of hand-blown glass form a captivating tower in San Antonio's Central Library.

A 131-year-old wunderkammer of Texas history.

This abandoned boat was left in place thanks to its rotting beauty.

The lighthouse central to the 1980s horror classic "The Fog" is, in fact, located in one of the foggiest areas of the Pacific Coast.

A giant knight, sex education, date shakes, and Jesus coexist happily in this Coachella Valley desert oasis.

The "world's biggest dinosaur" once housed a creationist museum in its abdomen.

A short volcanic hill in Quito doubles as a stellar observation point of an iconic statue.

Quito's historic, main square dates back to the 16th century.

In the 19th century, this was the center of Boston's Black community.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

This nearly 200-year-old restaurant's history includes an exiled French prince, JFK, and a very hungry Daniel Webster.

The site of Paul Revere's historic two lantern warning.

The remnants of a Gilded Age elegance preserved in the middle of a stark modern tower.

Ice cream stand, snack bar, and time capsule of milk conveyance.

Monuments don't get much more metal than these three giant viking swords planted in a Nordic hill.

The deepest underground city in Turkey was designed to protect 20,000 people behind massive stone doors.

In this historic region, homes and churches are carved into ancient volcanic rock formations.

One of the highest points in Bexar county offers birdseye views of San Antonio and a four-story stone tower.

One of the newest mosques in a city filled with thousands.

These ruins once flourished as the capital of the Lydian kingdom, often credited with the invention of metal coinage.