Turkey is in both Europe and Asia, with the Bosphorus gulf being the boundary between the two continents. Traditionally there are 5 continents - Europe, Africa, Asia, America & Australasia - and the boundaries between them are fairly clearly indicated by geographical features - eg the Atlantic Ocean between Europe and America; the Red Sea between Africa and Asia; the Bosphorus and the Ural Mountains between Europe and Asia. Nowadays, Antartica is usually counted as a sixth continent; and North (inc Central) America and South America are often regarded as separate continents.