A collection of 4,000 thimbles that's more versatile than one might imagine.

A staggering collection of satellite models and actual flight parts.

A monument to the center of the North American continent may be off by a few miles.

This small condiment museum makes all manner of mustards with a 200-year-old mill.

Residing along a busy thoroughfare, this sculpture urges passersby to consider the future.

If the tunes of antique organs and musical marionettes don't intoxicate you, the draft beer certainly will.

This mine is home to the largest man-made hole in Europe.

A replica of a 17th-century map of the stars stands in the courtyard of a Belgian university.

Though they might seem like arbitrary scratches in the wall, these were once official measures of length.

Above the door of a house, a plaque claims to commemorate the future living place of the inventor of time travel.

Meet the bronze beloved pet to a family of famous peeing statues.

A shining memorial to a Belgian hero is said to bring luck to anyone who touches it.

Head underground and take a tour of the city's working sewer system, and see the underground river Senne, which defined Brussels for centuries before being covered in the 19th century.

Medical history with an amazing, if frighting, collection of wax diseases on display.

This peaceful oasis appears dreamy, but it's also the site of a nightmarish legend.

This Edwardian workhouse tells a harrowing story of those who were forced to trade hard labor for lodging.

This statue honors the thousands of Allied avians that served and died for France during World War I.

A rare example of World War I trenches from the British front.

This annual Belgian water race attracts bathtub captains from all over the world.

The vast chamber inside this abandoned cooling tower looks like something out of a sci-fi dystopia.

This former coal mine, now a fascinating museum, was the site of Belgium's worst mining disaster.

These ruins reveal the remarkably intact layout of a Roman marketplace.

A 12th-century castle featuring a sensory path where partially-sighted visitors can experience regional history through touch and sound.

Dedicated to the American general whose reply to a German demand for surrender was simply "Nuts!"