A six-ton, 12-foot-tall concrete prairie dog is touted as the largest in the world.

A fitting attraction for the corn capital of the world.

This prehistoric sinkhole lured exclusively male mammoths to their death, much to the delight of science.

One of America's first dinosaur parks gives a window into Depression-era paleontology.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

The highest point in South Dakota contains the ashes of Valentine McGillycuudy, the "Holy White Man."

Not merely a museum – but a whirring powerhouse that offers a subterranean peek into the heart and soul of cable car operations.

A collection of 20th-century automata, penny arcade games, and musical contraptions.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

Visit the monolithic tomb of America's most famous general.

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.

The site of Paul Revere's historic two lantern warning.

Narrowest house in Boston.

An enormous, inside-out glass globe built in 1935.

This unattributed sculpture in Amsterdam is hiding in plain sight.

The largest collection of handbags in the world, the oldest of which were used to carry Bibles, primarily by men.