An historic and oft-filmed spot for musclebound iron pumpers on the Pacific coast.

A marvel of Byzantine engineering under the streets of Istanbul.

See massive fossils that are over 200 million years old in northeastern Arizona.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

A monument celebrating the idea of reaching inaccessible places.

The final resting place of New Orleans' most famous voodoo priestess.

Go inside to really appreciate this 500-year-old technological masterpiece.

The oldest cemetery in New Orleans, resting peacefully for over 200 years now.

Elevated freight railway turned wildly successful urban park.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

A spiritual vortex among the red rocks in Sedona.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

Every equinox this Maya pyramid puts on a spooky ancient light show.

The artist James Turrell is repurposing an extinct volcano crater as an observatory to experience the cosmos.

New Orleans' famous cemetery, located on the site of a former race track.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

These azure waters were thought to lead to the Mayan Underworld.

The crypt of the imposing Stephensdom holds royal intestines and thousands of skeletons.

An homage to everyone's favorite prehistoric cartoon family.

Macabre astrological automaton clock dating to the late 1400s.

This skeleton-filled altar piece served as a backdrop to one of the most iconic scenes in "The Sound of Music."

The largest ice cave in the world is thought to be the entrance to hell according to Austrian legend.