Before it was buried by volcanic ash, this fast-food restaurant fed the hungry hordes of ancient Rome.

First founded in 1472, this is the oldest bank in the world. Its history may explain why we call financial institutions "banks."

This Roman monument is surrounded by more recent construction, offering a stark contrast between ancient architecture and the modern urban landscape.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

Hopeless romantics will swoon over the sweet story behind this bright and colorful home.

Once America’s most beautiful army base, this abandoned military fort on the coast of Monterey Bay has been left to the elements.

One of the most elaborate displays of Jellyfish is on display at the aquarium.

This remarkably simple jail went over a century without an escape.

This municipal playground was co-created by the father of one of the most playful characters ever.

The largest drain hole in the world.

The only standing town in the United States that early Chinese Americans built for themselves.

I Street Bridge is the heaviest swinging center bridge in the United States.

A replica of the first public theater built in California.

This 19th century train workshop is a treasure trove of railroad history.

The California capital city once stood 10 feet lower than it does today.

Where the first "expert riders, willing to risk death daily" for the Pony Express were recruited.

This 15-story mural celebrates the 50th anniversary of the musician's iconic "At Folsom Prison" album.

The site of a fallen tree that protected Americans from British forces during the American Revolution.

This secluded ruin was once a home for exotic plants.

You can still ride this 100-year-old work of art in Brooklyn's largest public park.

A grand New York post office that is home to mailman Santas, scraps of postal history, and a pneumatic mail system.

This eclectic sculpture garden in Brooklyn, home to a bizarre collection of art, was once a run-down junkyard.

The place where Dvořák composed some of his most famous works.

This elaborate tunnel is the first structure composed of cast concrete in the United States.