Island where motor vehicles are banned -- home to the only carless highway in the United States.

The fifth-longest suspension bridge the world, connecting one Michigan peninsula to another.

Four hundred granite steps were built into this massive rock by the National Park Service.

Quite simply the largest tree in the world (by volume).

A building so large that it has its own weather.

One-time winter retreats of prolific inventor Thomas Edison and his friend Henry Ford.

Meet manatees face-to-face at this zoo for native species.

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

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

A luxuriant botanical garden below sea level.

Once featuring over 60 miniature replicas of famous Chinese locations, the Splendid China theme park was completely abandoned and is now mostly rubble.

Disney World's very first waterpark is now an abandoned ruin being reclaimed by the swamp.

Electrical pylon in the shape of Disney's beloved mouse.

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

The unluckiest U-boat in the entire German fleet is now on display in a Chicago museum.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

Largest tulip festival in America, includes fireworks, a parade, and a carnival.

One lonely, modern pyramid has gone from corporate think tank to deserted boondoggle.

The first artificial white water river course in North America cuts right through an Indiana city.