This small park features a monumental fountain wall, providing a great photo opportunity in the middle of Houston.

Designed by Buckminster Fuller, this relic of the 67 Expo survived fire and ice.

A farm in New Jersey grew a most unusual crop for AT&T's testing purposes.

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.