Contractors have been appointed for the US$275m (£172m, 188m euro) Miami Science Museum in Florida, US.
Boston-based Suffolk Construction and San Francisco-based Webcor Builders have been awarded the contracts to develop the museum, which was designed by British firm Grimshaw Architects.
The 250,000sq ft museum will boast a 35,000sq ft aquarium, a planetarium and 55,000sq ft of indoor and outdoor exhibition space.
It will be part of a new Miami Museum Park alongside the US$220m (£134m, 148.5m euro) Miami Art Museum - designed by Herzog & de Meuron.
The museum is expected to open in 2014.
