The recovered bones of martyrs slaughtered during The Terror are on display in this church crypt.

Despite being considered a thoroughly American sport, basketball's oldest surviving playing field is found in the basement of a Paris YMCA.

Museum on French naval history, with magnificent figureheads, a historic diving suit, and a boat used by Napoleon.

An off-the-beaten-path boutique stuffed with an eclectic collection of upcycled goods.

France's national museum of scientific and industrial instruments.

A golden plaque marks the site of the mysterious unsolved assassination of the former Swedish prime minister.

A Japanese video game arcade hides in the back of a Swedish pool hall.

The remains of Alfred Nobel's first nitroglycerine factory can still be found on the shores of a Swedish bay.

An Art Nouveau building covered in animal gargoyles and grotesques.

Padlocks cover this rickety footbridge with love.

An abandoned Roman salami factory has found new life as an art space home to 200 squatters.

A hospital where antique dolls are given new life.

This former Roman Catholic Church still contains the embalmed hearts and organs of 22 popes.