Despite the worlds cash-flow problems the Turkish city of Istanbul appears to undergoing a flurry of activity with preparation work underway for another 45 storey tower despite the final design having yet been chosen.  Four proposals have been put forward to the project named the Agaoglu Residential Tower all penned by local architectural firm Camoglu.  The first tower has a cylindrical glazed central core with two petal shaped fins running up either side...more