A former plant in one of the hubs of U.S. steelmaking has been turned into this museum celebrating the history of American industry.

Northern Ireland's Brobdingnagian stepping stones.

This short bridge is the only thing connecting a tiny Irish island to the mainland.

The only thing better than tubing down New Jersey's scenic Delaware River is doing so while eating a hot dog from a giant floating stand.

Mysterious rocks that ring musically when struck.

A "house to which to flee" for settlers in colonial Pennsylvania.

Sitting in the basement of a castle, the largest wine barrel in the world is bigger than most apartments.

Canada's oldest railway tunnel is illuminated in a rainbow of color as it passes under the streets of this small city.

Inside houses a vast collection of military aircraft and missiles spanning the ages.

A castle built for love, and abandoned due to heartbreak.

The mummified heart of a saint lives on in this church—after a brief hiatus when it was stolen.

This local gem houses the largest collection of pre-Raphaelite paintings outside of the U.K.