The design for what was to be later named the Europa building, involved the demolition of the 1960s extension, and the construction of a large glass-cubed atrium connecting the two renovated wings of the original 1920s L-shaped building. Within the atrium was to be constructed a "lantern-shaped" structure housing the main meeting rooms where the EU's delegations to the European Council and Council of the EU would meet.[1] [11] Due to EU leaders desire for the building to be eco-friendly, the design was adapted to include solar panels on the roof and recycle rain water.[3]