A vast array of tropical plants collected by a vacationing couple.

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

This university transit system is a 1970's vision of the future.

From economic backbone of a community to deadly diving hole, these former stone quarries are now a park for rock climbers and graffiti artists.

The "world's biggest dinosaur" once housed a creationist museum in its abdomen.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

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

An interesting decoration on this historic site, this weathervane comes with as many legends as it does questions.

The world's largest piece of copyrighted artwork.

The sprawling, eccentric estate of Ames and Ames, a brilliant botanist, and a genius inventor and artist.

A monument celebrating the idea of reaching inaccessible places.

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

A tribute to Ponce de Leon's supposed quest for eternal youth.

Welcome to old Florida, where a 1940s mermaid show is still enchanting visitors.

A building so large that it has its own weather.

Possibly the most beautiful carillon in the world, set atop Iron Mountain in Florida.