Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

These faux-cliff dwellings allow visitors to climb around on a replica archaeological site.

The final resting place of American icon Buffalo Bill, and a museum that aids in telling his tale.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

A gorgeous garden oasis with winding paths, stone bridges, and a troubling history.

A tall smoke stack and boarded-up buildings are all that's left of the pioneering plant.

Three hundred years of preserved Spanish colonial history in San Antonio.

An enormous pink granite batholith, long attributed with spiritual powers by the Tonkawa Indians.

This immigrant bridge once spanned the Thames but is now a fixture of an Arizona city.

Home to more than 13,000 pieces of war memorabilia and military equipment.

The site of many tense prisoner exchanges across the Military Demarcation Line between North and South Korea.

A monument to the two U.S. officers killed by North Korean troops while trying to trim a poplar tree.

The air force base preserves its scars from the Japanese attack on Pearl Harbor.

This museum of Hawaiian and Polynesian culture is the legacy of the last descendant of the Kamehameha Dynasty.

Climbing this abandoned railway leads to breathtaking vistas of O‘ahu.

The famous aviator's final resting place is a study in natural beauty.

A series of waterfalls and pools that flow through the 'Ohe'o Gulch and into the ocean.

A beach made of semi-precious green sand on the Big Island of Hawai'i.

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

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

The southernmost point in the United States is a beautiful place to look at but a deadly place to wade in.

This legendary urban waterfall creates a dazzling display of rainbows.

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