This tallest folly in the world began its life as an elaborate factory chimney.

The sanctuary seems to either float atop the water or sink into the dirt, depending on the water level.

This tiny business claims to be "the smallest pub on the planet."

This historic Benedictine monastery brews a booze so toxic that it has often been blamed almost singularly for Scottish hooliganism.

Man-made cave with enigmatic carvings, some say made by the Knights Templar themselves.

Britain’s highest medieval monastery is a remote ruin nestled at the head of a valley 1,240 feet above the sea.

Britain's tallest megalith towers over the cemetery of a quiet English village.

Wooden sleds have replaced donkeys to cart goods around this utterly charming car-free village.

The longest stone bridge in England has an impressive history that dates back over 700 years.

This tiny traditional smokehouse is the only one left in this historic fishing port.

The near loss of the stately fireplaces at this medieval castle spawned some of Britain's most crucial historic preservation laws.

The "Black Arch" guards the entrance to the picturesque Glens of Antrim.

Some wattle-and-daub, a Moorish mural, a glacial erratic, and a Giant named Gilbert.

The oldest of the three remaining bridges in England with buildings on top of them.

Manchester salvaged this sculpture of the adopted Mancunian when it was no longer wanted in Ukraine.

The ship built to ferry passengers and goods to the doomed Titanic is now the last remaining White Star Line vessel.

A whimsical cottage from the 1300s with a preserved Victorian-era post office inside.

An abandoned tower once used to study the cosmos hides within a thicket of greenery.

The oldest inn in England served brew to the crusaders.

When it came to designing his own small office building, the eccentric architect wasn't afraid to show the world what he could do.

This elaborate Byzantine-style building was designed for a not-so-pretty purpose.

Climb this overlooked gem's spiral staircase and you'll be rewarded with spectacular views of Glasgow.

A fernery hidden by neglect is uncovered, and an ancient specimen along with it.

The oldest continual pilgrimage site in Britain was supposedly created by a gruesome beheading.