Home to the Amorphophallus titanum "Corpse Flower," which is among the largest flowers in the world and also smells powerfully of rotting flesh when in bloom.

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

NASA's leading space science lab started by a co-founder with deep ties to the occult.

A fitting attraction for the corn capital of the world.

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

The only structure left with direct ties to the Salem witchcraft trials of 1692.

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

Enormous pendulum helps keep Taiwan's tallest building from swaying.

This memorial commemorating fallen Swiss Guards of the French Revolution has been called the saddest stone in the world.

The fairy tale castle of the “fairy-tale king,” this was also the inspiration for Disney’s “Sleeping Beauty.”

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

The world's second largest single-dish radio telescope, once used to contact E.T.

A large grotto built in the 16th century amidst Florence's famous Boboli gardens.

Secret refuge and museum of the Duke of Florence.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

Sweden's "good old days" painstakingly re-created in a model village.

Go inside to really appreciate this 500-year-old technological masterpiece.

World's largest carved onyx figure stands as a tribute to enduring peace.

These curious caverns have been home to mushrooms, gangsters, and disco.

Minnesota's oldest and deepest mine is now an underground physics laboratory.

The only arched bridge made of stone on the entire Mississippi River.

An architect's childhood fantasy treehouse made real.

A beautiful geyser under environmental threat.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.