These barriers stand as stark reminders of Northern Ireland's troubled past.

A museum marks and documents the site of the Titanic's launch.

The first U.S. town to secede from the Union, only to vote themselves right back in.

The rusting remains of the largest assembled WWII fleet on the West Coast.

Over 300 taxidermied animals in a Californian restaurant make for a taxidermist's dream and an animal lover's nightmare.

The tallest bridge in California was constructed for a project that was eventually cancelled.

This hidden amusement park is a magical escape for kids and kids-at-heart.

A plaque and memorabilia collection mark where A&W got its start.

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

This 19th century hydroelectric powerhouse was the first of its kind.

Pillars made of 700 pieces of luggage climb to the ceiling of Sacramento Airport's baggage claim.

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.

Art Deco stylings conceal the true nature of this bridge.

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.

The capitol city's oldest existing cemetery.

At this 1940s-era neighborhood favorite, you can still drink a cherry phosphate.

A tiny survivor of the Donner Party disaster.

Puzzling...this tree looks like an assemblage of dismembered monkey limbs.

A working miniature city designed to teach kids about safety and presumably city planning.

The last of a gourmet supermarket chain, this store helped spark California's Food Revolution.