A museum dedicated to a Cold War era sausage.

This former abandoned hospital, a complex of stunning 19th century buildings, once housed 2,000 psychiatric patients.

A showcase of canine neckwear spanning five centuries of doggie fashion and function.

Gutted during the Liverpool Blitz, this architectural husk has been left destroyed in honor of the dead.

A mailbox that saved a nature reserve.

Tiny effigies of the victims of Edinburgh's famous Anatomy Murders.

Glasgow’s piece of the patron saint of love.

An ancient holy well said to be used by the patron saint of sailors and travelers, lost in the boggy west of Valentia Island.

More than 5,000 artifacts donated by the people of the city, plus a room entirely devoted to the band U2.

You can see three Irish counties from this Neolithic hillside fort, once the seat of the Kingdom of Ailech.

Wallabies live naturally on this Irish island.

The oldest inn in Kilkenny was established by the first convicted witch in Ireland.

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

Known as the "Dodo Manège," this carousel features a herd of animals that have disappeared—or may be gone soon.

The macabre collection of Jacques Sirgent, an expert scholar on the undead and all of their trappings.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

Grotto replete with mystical designs laid out in glued shell mosaics.

The anatomical-pathological collection of a man who changed surgery.

Since 1874, this macabre collection has developed into a museum devoted to Scotland Yard's mementos of dastardly deeds.

This hidden green space is the city's second largest conservatory.

A mysterious pair of mice eating a piece of cheese is London's smallest public sculpture.

Taxidermied animals galore, by appointment only.

Pop culture has helped to keep this iconic British building from being destroyed.

The sixth of London's "Magnificent Seven" cemeteries, and a source of unlikely inspiration to Beatrix Potter.