The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

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

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

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

Elevated freight railway turned wildly successful urban park.

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

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.