A residential tower being built behind the Mimar Sinan mosque in Ataşehir in 2012

The construction of a residential tower is seen behind the newly built Mimar Sinan mosque in Atasehir on the Asian side of Istanbul in this September 4, 2012 file photo. Perched on the edge of a wasteland earmarked to become a financial district on Istanbul's Asian side, the curved facades of five massive luxury tower blocks sparkle in the sunshine, the centrepiece of a sprawling new residential complex. It is the sort of development that overseas property buyers in Turkey, mainly from Europe, have usually shied away from, investing instead in holiday homes along the country's Mediterranean and Aegean coasts. But a new wave of wealthy investors from the Middle East and Russia is increasingly eyeing luxury developments in bustling Istanbul, lured by a relaxation in property laws, relatively cheap prices and a thriving economy. Picture taken September 4, 2012.