Proposals for the planned renovation of the iconic Houston Astrodome in Texas, US, have been unveiled.
The most expensive – at $1.35bn – would see the structure relabelled as Astrodome Renaissance, and would include a convention and science centre, a planetarium, and a county and city museum.
A hotel will be privately financed and the site could include a movie studio.
The three-option plan also includes a $873m proposal to level the Astrodome and replace it with a plaza.
The intermediate option, costing $1.13bn, would repurpose the dome to turn it into a science and technology centre and a storage facility.
Mark Miller, general manager of SMG-Reliant Park, wants to add a 10,000-seat arena, exhibition space, a garage and other meeting spaces connected by skywalks to any of the plans.
The county will make a decision on the proposals by the end of the year.