These ancient sacred grounds granted amnesty to those who managed to reach them.

Watch the newest land on the planet form before your eyes.

Hide from the tourist hordes in these relatively unknown, and unguarded lava caves.

These picturesque Hawaiian falls are home to a rare species of fish that uses a special sucker to climb up cliffs.

Earth's tallest volcano is sacred to Native Hawaiians, and home to a dozen world-class observatories.

This black shoreline is made up of exploded lava particles.

Honoring the famed folktale author, this California museum looks like it belongs in the Black Forest.

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

Oldest building in California still in use.

Staircase winds down the side of Telegraph Hill through gardens, wild parrots flying overhead.

One of the largest trees of its kind in California.

L. Frank Baum wrote part of the "Wizard of Oz" series in this wooden Victorian beach resort.

One of Hollywood’s favorite government buildings.

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

NASA's leading space science lab started by a co-founder with deep ties to the occult.

An extraordinary final resting place full of oversized art, amazing statues, and dead celebrities.

For decades, this waterfall remained hidden because of an artificial dam.

A throwback train ride transports passengers through one of the lesser-known national parks in the country.

Ghost stories surrounded this “castle,” the only structure from a huge mansion that was never built.

Rare recess caves fill this unbelievably beautiful Ohio park.

This spectacular public market has got meat, fish, vegetables, baked goods, and enough kielbasa for a lifetime.

The home made famous by the 1983 holiday classic is now a perfectly preserved shrine to the movie.

The oldest original lighthouse in Alaska that was born out of a tragic shipwreck.

The first Russian Orthodox church in North America and an Alaskan landmark.