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

The once forbidden "secret cabinet" of erotic art from excavations of Pompeii and Herculaneum.

Mural made of 100,000 pieces of hand blown glass, and one of the largest glass murals in the US.

This historic "City of the Dead" lies prominently in the center of New Orleans' famous Garden District.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

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

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

The second oldest continuously operating bar in Louisiana.

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

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

Mysterious ancient boulder carved with petroglyphs in the mountains of Western North Carolina.

A church that bred legends, and served as an inspiration for the Da Vinci Code.

The trials and tribulations of marking Poe’s grave.

An unusual round church in London with a Templar past.

This symbolic piece of New Orleans architecture is also home to a few ghastly stories.

A museum dedicated to exhibiting remarkable outsider art.

Once thought to be the oldest living tree in the world, Methuselah was germinated before the Egyptian pyramids were built.

This Scottish burial tomb once held hundreds of ancient eagle bones.

Thanks to both terrific preservation and historic vandalism this ancient site is known as the "Heart of Neolithic Orkney."

Possibly the oldest of Britain's ancient henges is also one of its most stark.

The true age of this ancient stone circle is unknown, but its stunning vista isn't in question.

Amazing and mysterious Neolithic settlement on Scotland's Orkney Islands.

This hill made entirely of ancient Roman jars was simply a garbage dump to the people of the time.