The Technology Fair was an event held at Ulfstead Castle showcasing inventions, including engines, from around the world. It appears in A New Arrival and World of Tomorrow, and shares its name with the latter episode.
A large Ferris wheel with coaches as gondolas was installed at the castle for the fair, and remained as a permanent fixture afterwards.
- The Road Plane
- The Mighty Magnet
- Dr. Holyfield's Milkshake Machine
- Metal Man
- Ruth's Hover-Car
- The Technology Fair appears to be loosely inspired by the 1964 New York World’s Fair.