Among the plan’s features, the city has placed a strong emphasis on the environmental impact of new center.

Wheeler said the city hopes to use all rainwater that falls on the building for the center’s gardens by building some rooftop gardens and a reservoir for a planned south-side garden to draw rainwater from. Wheeler also said that the city expects to save 25 percent of the energy that would be used by a similar building without the planned energy saving features.

Ann Arbor will begin collecting bids for various parts of the construction today.