The Saint Louis Science Center (SLSC) in St. Louis, Missouri, US, will open a new expanded exhibition hall in July 2011.

The permanent space is part of the centre's strategy to increase its capacity to house traveling exhibitions and major events.

The 13,000sq ft (1,210sq m) addition, designed by PGAV Destinations and built by Alberici Constructors, will connect to the east side of the Science Center, just south of its main entrance.

Museum officials said the EXPLORADOME, the bubble-like structure just west of the Science Center's main building, is nearing the end of its lifespan and needs to be replaced.

Doug King, president and CEO of SLSC, said: "We've always planned to replace the EXPLORADOME with a permanent exhibition space with one that fits our needs and that will enhance the façade of our building and our visitors' experiences."

The project has been funded by donations from both private and corporate donors while privately placed tax-exempt bonds are also being issued to provide bridge financing.

SLSC is supported by tax proceeds from the Metropolitan Zoological Park and Museum District, but no tax funds received will be used for the expansion.