This Irish museum in a historic 19th century market pays tribute to the glory of butter.

Over 600 vacuum cleaners stack the shelves of what may be the cleanest museum in America.

A hobby born from insomnia has turned into a hangar full of objects that have been be-buttoned by the Button King.

Over 20,000 sets of spice shakers reveal the surprisingly telling history of our most basic spices.

A museum dedicated to a Cold War era sausage.

More than 5,000 contemporary and "historic" mustards from around the world.

The whole of Maine's history with the salty little fish is packed into this tiny coastal museum.

A master plumber has turned his love of art and toilets into a folk museum that's not taking the piss.

A fascinating little museum dedicated to the thousands of chemical substances concealed in our food.

The humble horn finally finds a place in the sun.

This Cheshire museum has cuckoo clocks, a rare pipe organ and vintage motorbikes. But mostly cuckoo clocks.

An homage to the humble watering can.

More than 8,000 drinking jugs say “Cheers!” to a guy named Toby.

World's largest herd of white deer populate a former U.S. Army depot.

This oversize piece of novelty cookware once cooked the largest pancake in the world.

An abandoned asylum where patients have been forgotten but their possessions remain.

Once a place of peaceful repose, this sanitarium now faces an uncertain future.

Depression-era fun lives on in this Harlem museum dedicated to the sport of the street.

This castle-like building in Manhattan helped destigmatize cancer in the 19th century.

Nope, not Washington Irving's house.

Manhattan's Thirteenth Avenue was made on landfill then deliberately destroyed — apart from one small, obscure block.

Relics given to a Manhattan church to avoid seizure by the Italian government.

The mummified relics of an American missionary.

Church in Manhattan holds the bloody sock of Padre Pio, among with many other unusual relics.