Istanbul is a town.
Istanbul is a transcontinental city in Eurasia , straddling the Bosphorus strait -LRB- which separates Europe and Asia -RRB- between the Sea of Marmara and the Black Sea .	Marmara	Marmara Region	Istanbul	Istanbul Province	Eurasia	Eurasia	Bosphorus	Bosphorus	strait	strait	Europe	Europe	Asia	Asia	Sea of Marmara	Sea of Marmara	Black Sea	Black Sea
