Harris County Judge Emmett, Preservation Houston and the National Trust for Historic Preservation are sponsoring a special 50th birthday party for Harris County's "Eighth Wonder of the World," offering a free celebrationof music, food, drinks and souvenirs while supplies last, followed by a rare opportunity for the public to go inside the historic Astrodome for a quick photo with friends and family. Organizers expect several thousand guests to celebrate Harris County's most iconic and recognizable building. Guests may park free of charge starting at 5:30 p.m. in NRG Park's red lot, just northwest of the Astrodome and north of NRG Stadium. Here's the details: JUDGE EMMETT, PRESERVATION GROUPS TEAM UP FOR ASTRODOME'S 50TH BIRTHDAY PARTY Public Invited to Free Party Featuring Dome Visit, Food, Entertainment, Cake and Souvenirs WHO: Harris County Judge Ed Emmett Harris County Sports & Convention Corp. Chair Edgar Colon Various City and County Officials Eighth Wonder Brewery Monster Jam Truck OUTLAW and driver Michael Harper Monster Energy AMA Supercross Motorcycle Riders WHAT: Astrodome's Free 50th Birthday Party and Tours WHEN: 6 p.m. to 8 p.m., April 9, 2015 WHERE: Carruth Plaza (northwest corner of Astrodome) NRG Park 8400 Kirby Drive Houston, TX 77054