With the closing of Edmonton's city airport,the city now has clearance to lift the restrictions on building height.These cranes will become more prevalent and will in much greater number in the downtown core.A new arena,Rogers Place,is already under construction to the tune of $450,000,000 and a 63 story $500,000,000 retail/office/condo building was announced in the arena district yesterday.Yes it looks like Edmonton is going on a building spree!