This bill authorizes the Secretary of the Interior to allow the Gateway Arch Park Foundation, the official nonprofit partner of Gateway Arch National Park, to host private events in park buildings including the Visitor Center and Old Courthouse. Any agreement between the Interior Department and the Foundation must include protections for the park's resources, such as limits on how many events can occur per week, requirements for liability insurance, and restrictions preventing private events from interfering with public access to the park. The Foundation would be required to pay fees to cover maintenance costs and wear and tear from private events, and the government would not be liable for injuries or damages occurring during these events. The bill does not prevent the National Park Service from continuing to host its own events or issuing permits to other organizations for special events at the park. No specific funding amount or implementation timeline is specified in the legislation.