Scavenger Hunt Adventure. Turn San Diego's Balboa Park or Old Town into a giant game board. Combine the excitement of the Amazing Race with a three-hour city adventure. Guided from any smart phone, teams make their way among well-known and overlooked gems of the city, solving clues and completing challenges while learning local history. Feb. 1–Mar. 31. $49 per team (2-5 people). Sign up online at www.UrbanAdventureQuest.com.