This Roman quarry once held secret masses and smuggler's contraband and is now home to rare species of bats.

The undercroft is a spectacular example of medieval Cistercian architecture.

Each year a new straw behemoth is born.

Once a palace for the Archbishop of York, these 15th-century ruins now serve as a haunt for history buffs.

The only place where can you share a seat with the bums of the Fab Four.

A Victorian marvel of engineering is now a 21st-century tourist attraction.

Though difficult to access, this stunning cave has a place in Scotland's poetic history.

Edinburgh’s version of the Sistine Chapel is this former church, with an interior covered in paintings done by one woman over the course of nearly a decade.

This tiny getaway tucked away in an uninhabited Scottish valley isn't your ordinary teahouse.

In the quiet village of Fulmodestion, the ruins of a medieval church remain hidden among vines and foliage.

A seaside town with no sea in sight.

The United Kingdom's smallest working cathedral also serves as a quaint bed and breakfast.

A series of idealized caves carved to entertain guests.

Legend says squeezing into this slender stone seat will make your wish come true.

This forgotten chalk mine was reopened thanks to a massive effort from the local community.

A giant sculpture of the legendary "Salmon of Knowledge" celebrates the return of fish to Belfast's River Lagan.

For decades, a bottle factory dumped their waste into these waters—now it's considered the best sea glass beach in England.

Be on the lookout for the symbolic insect all over the city.

This quaint mortuary chapel hides a stunning Celtic Revival and Art Nouveau interior.

A witch wreaks ruinous revenge on this ancient church with her "enchanted leg."

One of Edinburgh's most popular works of street art is located well off the beaten path.

This tiny train shuttles passengers to one of Northern Ireland's most spectacular sights.

A striking 500-year-old mansion provides an unexpectedly sublime home for live deer and a menagerie of exotic stuffed animals.

These skilfully executed, poignant works of art dot a verdant Scottish dell.