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The Texas Onion Fest is a celebration of the world-famous Texas 1015 Onion, which was developed in Weslaco and is now the State Vegetable of Texas. The onion is named after its suggested planting date, October 15. The Weslaco Area Chamber of Commerce sponsors the festival, and it includes live entertainment on two stages, an Onion Eating Contest, a variety of food options, commercial booths, kiddie rides, Dancing Horses, a 1015 Market, a Car Show, cooking demonstrations, and more. The Dancing Horses performance is an event you cannot afford to miss. It features horses trained to dance to traditional Mexican music, with their riders performing alongside them. The Car Show will display a lineup of custom SUVs, trucks, and classic cars to admire. The Onion Eating Contest is famous and open to all ages, with categories for youth, adults, and beauty queens. The Kids Zone is where children can enjoy various activities and rides, including a petting zoo. Remember to visit the Culinary Center, which features food demonstrations highlighting the Sweet Texas 1015 Onion, the festival's main attraction.

If you are interested in history, aviation, or transportation, visit the Rio Grande Valley Wing's museum. It is an exceptional flying and transportation museum and the only one worldwide. It doesn't matter if you're a pilot, a veteran, or just someone fascinated by the history of aviation and transportation; the museum offers an exceptional educational experience. So, join the Rio Grande Valley Wing and learn more about the fascinating world of aviation and transportation. The museum is situated at the historic site of Port Isabel - Cameron County Airport in Los Fresnos. Its dedicated volunteers are constantly working to develop and showcase displays of artifacts that narrate the story of the nation's aviation and transportation heritage. The museum boasts a collection of 8 WWII aircraft and numerous operational vintage ground and support vehicles, most of which have been generously provided by South Texas families.