This ancient Irish tower could easily have stood in for Rapunzel's prison.

This Irish museum in a historic 19th century market pays tribute to the glory of butter.

This permanent collection of preserved bodies taken from Irish bogs is one of the leading authorities on such morbid mummies.

One of Ireland's most infamous prisons for rebels including men, women and children.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

A deserted hodgepodge of experimental structures designed by nearby university students.

This 40-room dwelling tucked within a cliff was built by the basin's prehistoric residents.

A small flooded ghost town with a few scattered structures remaining.

The unbelievably opulent home built for an infamous newspaperman.

A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.

This historic national park is covered in the stunning ruins of red rock pueblos.

Ancient pueblos built into the base of a natural canyon wall.

This Arizona observatory is famous for investigations into Martian life, and as the place humans first spotted Pluto.

This collection of Wild West movie memorabilia also claims to hold some secrets of the Lost Dutchman's mine.

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 beach made of semi-precious green sand on the Big Island of Hawaiʻi.

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

This black shoreline is made up of exploded lava particles.

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

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

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

Quite simply the largest tree in the world (by volume).

Mining caused an asbestos emergency in this small town.