No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

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

Paths are maintained, but trees have taken over plots.

This former “ante-chamber to the guillotine” has been refurbished to illustrate the brutal history of French justice.

A restored Pittsburgh house of God has been converted to a marvelous house of suds.

There aren't too many operational funiculars around, but Pittsburgh has two!

At 207 feet, one of the world's longest continuous escalators.

Home to items never before seen by the public.

The Battle of Atlanta in 360 degrees, featuring a corpse that bears a striking resemblance to Clark Gable.

The "lovely red Vega" of the legendary record-settling pilot.

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

The maritime museum that boasts the largest nautical library in the western hemisphere.

Scenic mount trashmore, Virginia Beach's most curious waterfront still has a couple of secrets.

This insurance company building reminds customers that witches, bears, and gnomes are out there, best be insured.

An abstract monument to a symphonic composer.

A subterranean house of worship carved right out of the bedrock.

Medieval museum built over Roman baths that features famous tapestries of a lady and a unicorn.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

This modest marker near Notre Dame identifies the very center of Paris.

This immigrant bridge once spanned the Thames but is now a fixture of an Arizona city.

"Only the devil could play golf here."

The lowest point in North America is home to an undrinkable pool surrounded by fields of geometric salt flats.

The drama of nature in full effect in this Nevada State Park.

Experience a charming 1930s version of "infotainment."