A true treehouse near Hawai'i Volcanoes National Park.

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

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

This industrial area was the dumping ground for massive amounts of trash, some of which washes up as tiny bits of sea glass.

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.

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

The island of Lanai in Hawai'i is a paradise for cats and cat lovers.

A tunnel of hardened lava along Maui’s famous Road to Hana.

This black shoreline is made up of exploded lava particles.

What remains of the summer palace of King Kamehameha III.

A glass display case holds the document that ended the Second World War—which one person signed on the wrong line.

Hiding in plane sight.

An ode to one of the first concerts broadcast via satellite.

During the solar phenomenon "Lahaina Noon" this bendy, curvy sculpture forms a perfectly circular shadow on the ground.

This WWII plane died a quiet death, and is now a garden eel playground.

The only royal palace on U.S. soil has been a territorial capitol, a military headquarters, and a prison for a queen.

A unique set of caves that spits waves back out into the ocean.

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

A moving and macabre World War I-era painting by the great artist Otto Dix.

Because sometimes you need to make a batch of frites even when the stores are all closed.

This statue honors the thousands of Allied avians that served and died for France during World War I.

This monumental mural crafted nearly 40 years ago is still in perfect condition.

This triumphal arch celebrating the Sun King's conquest of Lille is a masterpiece of military architecture.