Quirky Welsh observatory unites art and science.

These medieval monastery ruins are surprisingly overlooked by most tourists.

A tiny village in Wales claims the name of a noble medieval hound slain for a crime he didn't commit.

This 19th-century island fort built to protect against an invasion by sea.

This hill and tower are steeped in legend, from King Arthur to the Holy Grail.

An enormous alien invades Woking, England, as an homage to the H.G. Wells classic 'The War of the Worlds.'

An unexpectedly extraterrestrial room in a former Victorian resort club.

A stone wall commemorates the legend of a ferocious dragon who literally got his butt kicked by a knight.

A modest stone circle in North Wales.

The largest of only eight working transporter bridges left in the world.

The ruins of a once-grand mansion in Northern Ireland are now thought to be haunted.

One of the last doorless, continuously moving elevators still in use in the U.K.

The whimsical steel spider lurking in the shadows of this suspension bridge shows that engineers can have a sense of humor.

It is said a heartbroken man visited the gap every day to stare blankly out at the sea.

A writer's tiny retreat built from salvaged shipwreck timbers.

This century-old cinema is complete with musical interludes and boasts a rare projection system.

An 18th-century lighthouse built on a 16th-century castle is now a monument to the maritime beacons of Scotland.

Led Zeppelin wrote some of their most iconic songs at this little 18th-century Welsh cottage.

This stretch of the River Severn where large waves flow against the current is the birthplace of river surfing.

The only medieval bridge in Britain with its defensive tower still in tact.

After mysteriously refusing to surrender at the end of World War II this sunken submarine was only salvaged in a search for Nazi gold.

This ancient oak tree sheltered accused "witches" in the 17th century.

These quintessentially English stepping stones were built for Victorian tourists.

A stretch of land where the sour-sweet vegetable is cloaked in darkness and grows so fast you can hear it crack, squeak, and pop.