The Hughes H-4 Hercules - the largest flying boat ever built - made one 26-second flight in November 1947 and now stands preserved in McMinnville, Oregon.
How Howard Hughes built a 320-foot wooden flying boat, silenced Congress with a single 26-second flight, and created the most ambitious aircraft ever constructed.
The Hughes H-4 Hercules holds the record for the largest wingspan of any aircraft ever flown at 320 feet, and has called Oregon's Evergreen Aviation Museum home since 2001.