The biggest museum dedicated to insects in North America, one of the largest in the world.

The wreckage still sits at the exact spot the plane crash-landed in 1945, carrying 1,000 pounds of explosives.

This three-chambered cave is the only protected natural bat hibernaculum in Quebec.

Home inspired by the crystal rock formation of the Emerald Estates.

This cemetery features modernist statues as strange as its name.

Haunted tuberculosis hospital built by the patients.

Barcelona's historic 19th-century sewers, whose foundations were laid in medieval times, are open to the public for exploring.