This stretch of beach along California's central coast is a busy highway for the largest seal in the northern hemisphere.

This Big Sur waterfall drops 80 feet directly into the Pacific Ocean, and inspired the hillside house up top.

While not recognized by Guinness, this chocolate waterfall is likely to be the world's largest.

The ruins of a town wiped out by the second-largest earthquake in recorded history.

A rare chance to get up close and personal with a 13-mile ribbon of ice near downtown Juneau.

A classic gold rush hotel can be expected to pick up some ghosts along the way, and the Golden North is no exception.

A rare kind of blue bear can be found chiefly in the national park that shares their name.

A bronze monument to the infamous radio broadcast in the real New Jersey town where the fictional Martians crash-landed.

Where the embers of the Big Bang were first detected.

An idyllic swimming pool tells the tale of Hemingway's trouble with women.

The highway's southernmost spot is a beloved local attraction.

A monument celebrating the idea of reaching inaccessible places.

"We Seceded Where Others Failed."

Where monkeys run wild and the humans are caged.

The smallest post office in the United States is no bigger than a broom closet.

One of many gator theme parks, abandoned in the sugar fields of South Florida.

A hidden beach at the end of a tunnel of mangrove trees.

One-time winter retreats of prolific inventor Thomas Edison and his friend Henry Ford.

A creative deviation in this post office's design was once a source of controversy.

The unique collection includes bronze cast handprints of some of America's most famous astronauts.

A building so large that it has its own weather.

This abandoned NASA launch site is now a memorial to a trio of astronauts who were killed there.

This stretch of highway is said to be haunted by ghosts of settlers whose graves were paved over.

The walls of America's oldest masonry fort famously "swallowed" cannonballs.