Fervent Astrodome fans now have a chance to get a glimpse inside its hallowed halls, before work begins next month to re-purpose the Eighth Wonder of the World.

Dubbed a Domecoming, the free event takes place April 9 — which happens to be the 53rd anniversary of the first game ever held at the The Astrodome. The Domecoming is jointly hosted by local group the Astrodome Conservancy, along with Harris County. Attendees will be entertained by DJ London and the original AstroNuts, and can can enjoy refreshments via food and beverage vendors at NRG Park.

Harris County Judge Ed Emmett and our Astrodome Conservancy chairman Phoebe Tudor will share the latest Dome development details. On February 13, the Harris County Commissioners court approved a $105 million project that would reconfigure the Astrodome into an event center. The plan involves raising the ground level up two floors, which would create a parking garage with 1,400 more parking spots.

“The Astrodome is an important landmark to Harris County and Texas and is part of our unique culture. As the first fully enclosed, domed stadium, it was once home to professional sports teams like the Houston Oilers and Astros, organizations including the Rodeo, as well as hosting countless signature events that shined a global spotlight on our area,” said Phoebe Tudor, Chair of the Astrodome Conservancy, in a statement. “Our mission is to preserve its legacy and creatively engage Houstonians at the Astrodome once again.”

Domecoming fans are encouraged to wear vintage gear from the Astros, Oilers, and other Astrodome-related events to show off their Dome pride. Supporters who donate $500 or more to the Conservancy can enjoy a special tent, and VIP, invitation-only preview event on April 9.

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Admission to Domecoming is free, but a ticket is required for entry. Ticketing begins online at 10 am Wednesday, March 21. Gates at NRG Park will open to the public at 4 pm, access to the Astrodome begins at 5 pm; the party runs through 8 pm.