Demolition has begun at Harold Simmons Park, making way for a makeover that will cost hundreds of millions of dollars.

According to its website, West Overlook will be a 22-acre park acting as “the signature entrance” into the larger 250-acre Harold Simmons Park, sandwiched between the Ron Kirk Pedestrian Bridge on the north and the Margaret McDermott Bridge on the south. The refresh, which began on October 22, is slated to cost $325 million.

“I don’t know if anyone thought it would be this grand. … Jim recorded the news last night, you know, about this project and sent it to the kids and they were like, ‘Wow, I can’t believe that that’s happening,’” West Dallas resident Linnea Glatt said of her husband Jim, per WFAA.

Harold Simmons Park is named after the late Dallas businessman and philanthropist. His widow, Annette, donated $50 million toward the park’s creation. Collectively, donors have contributed over half of the entire park’s cost.

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West Overlook is expected to have six 40-foot playground towers, once completed. It will also house a skate and bike park, picnic areas, sports courts, a water garden, a splash pad, a dog park, an event center, a café, and a ferry pond.

A massive old industrial shed will be renovated for event use and connected to the greenspace via a land bridge, said Dallas City Councilman Omar Narvaez. The shed has been in the neighborhood since the 1930s.

“It helps our mental health. I tell people, we talk about arts and culture all the time. Parks are cultural centers,” said Narvaez.

Tony Moore, president and CEO of the Trinity Park Conservancy, which is leading the project, says it’s tough to understand just how large the park is.

“This is an economic driver. This is a park that will have a social impact. This is a park that will have an environmental impact,” said Moore, per NBC.

The park is expected to be completed in roughly three years.