The oldest pub in Ireland may also be the oldest surviving bar in the entire world.

Where hills of dirt conceal the burial ground of one of the most powerful ancient Native American societies.

Castle and secret tunnel withstood a siege until its owner was killed by the Holy Roman Empire, while sitting on the toilet.

The oldest scientifically dated tree in Europe lives on a remote cliff.

This rustic old building is said to be the most photographed barn in America.

A shop full of natural curiosities, carnivorous plants, and costumed taxidermied mice.

A monumental cross hides in the trees in Golden Gate Park.

Carnivorous plants, medieval aphrodisiacs, and the largest original wood structure glass conservatory in the western hemisphere.

An essential stop before plundering, BYO Cutlass.

One man spent 10 years building a spectacular section of road because no one else would.

There is no trying to fall in love with this Star Wars fountain, you just do or do not.

One of the world's steepest streets seems to have houses sliding down it.

Neither Spanish settlers nor anyone since has been able to tell who built these strange California rock walls.

Centuries of human activity have forged an eerie landscape of ruins and craters on an exposed and windswept hilltop.

Breathtaking Byzantine paintings cover the inside of this 12th-century church.

A chapel on a volcanic core, marking the end of a successful journey.

The final resting place of up to 6,000 Confederate soldiers, the largest mass grave in the Western Hemisphere.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

A pub that is literally in the middle of nowhere, but continues to do business.

Home to drunken tower-climbing goats... seriously.

Ancestral Puebloan ruins, natural arches, and box canyons abound in this seldom-visited corner of Monument Valley Navajo Tribal Park.

The final remnant of the Arkansas zinc industry is this historically protected ghost town.

The largest source of fossilized insects anywhere.

Wondrous sandstone hoodoos where Native Americans collected clay for pottery, 9,000 years ago.