Update (Monday, 9:37 p.m. PT): The answer to today's challenge -- which 30 people got right -- is a replica of the Wright brothers' airplane catapult, at the Huffman Prairie Flying Field, in Dayton, Ohio. Thanks to all who played, and to everyone, please come back for tomorrow's challenge.
Welcome to the Road Trip Picture of the Day contest. This is your chance to win some cool prizes as you test your skills at recognizing pictures.
Each day, I'll be posting a new photograph from my various travels, and your job is to try to … Read more