The beautiful behemoth is one of the largest trees of its kind in the United States.

A massive volcanic plug is now a protected area that hosts a number of bird species.

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

Though the original building has been demolished, these massive bronze doors were saved.

Hollywood's oldest hotel is the site of the first Academy Awards, the birthplace of Marilyn Monroe's career, and the home of Montgomery Clift's ghost.

Because there's no place like home.

An increasingly eccentric apartment building, topped with winged beasties.

This star-studded Old Hollywood restaurant is where fettuccine Alfredo made its United States debut.

Shop selling 500 flavors of soda has something for everyone.

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

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

Art Deco stylings conceal the true nature of this bridge.

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

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

The capitol city's oldest existing cemetery.

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

This monument on Breed's Hill proves that one of the most famous battles of the Revolutionary War is misnamed.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

The site where Charles Dickens gave his first public reading of "A Christmas Carol" in the US.

A more than 260-year-old crypt built on Boston's oldest English burial ground.

This statue intended for children to enjoy became a minor political spat.

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

One of the oldest used bookstores in the U.S. has been selling antiquarian treasures since 1825.

The classic Christmas carol was written at this Massachusetts tavern in 1850.