This black shoreline is made up of exploded lava particles.

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 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.

A true treehouse near Hawai'i Volcanoes National Park.

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

These Great Lakes sea caves accessible by boat in the summer turn into temples of ice reachable by foot in the winter.

The famed architect designed this Minnesota gas station of the future with a lookout tower.

The Midwest's reigning king of surplus stores is full of nothing you need and everything you want.

This iconic water tower and failed bandstand is open for panoramic views once a year.

This lab's maddening silence is good for business but bad for sanity.