Artwork tucked within the trees greets visitors with surreal sonic experiences.

A controversial memorial at the place where Captain Cook met his violent end.

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

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

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

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

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

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

A model of a galactic embassy is hidden in plain sight along the highway, proposed by a UFO religion to find the aliens that created life on Earth.

A true treehouse near Hawai'i Volcanoes National Park.

The magical, mossy forest that inspired Princess Mononoke.

A library of rare occult books in Los Angeles.

While most books are made of wood, these wooden books are truly made of, and all about wood.

A museum of magic with a Sadist past.

A museum on the history of Paris, including a set of Napoleon's toiletries, Proust's room, and relics of the Revolution.

The macabre collection of Jacques Sirgent, an expert scholar on the undead and all of their trappings.

One of the oldest masonic museums in Paris.

This museum houses an imposing skeleton army comprised of creatures great and small.

One of the oldest medical collections in Europe focusing on rare surgical instruments.

A museum of carnival attractions where you are invited to ride the rides.

Egyptian Revival movie palace abandoned for decades and restored in 2013.

Hidden away in a modern library are the remains of one of the 18th century's most celebrated wunderkammers.

Museum on French naval history, with magnificent figureheads, a historic diving suit, and a boat used by Napoleon.

A 19th-century shrine covered with prosthetic body parts as votive offerings.