Istanbul is largest city of Turkiye,and city has unusual history combination of Greek Orthodox, Roman, Ottoman and modern day. Istanbul is melting spot of cultures,western culture in east,eastern culture in west . Modern Istanbul is magnificent city with 15 000 000 inhabitants and on two continents but our destinations on the European side. We visit St Sophia,Blue Mosque (sultan Ahmet mosque), ancient Hippodrome, Underground Basilica (water reservoir) and Topkapı palace. All most is full day tour. We can have lunch any time on tour. St Sophia, Blue Mosque Hippodrome and Topkapı palace are very close to each other therefore after leaving from our vehicle the rest of tour is by walking. That area is called as Sultanahmet area and vehicles are not allowed accept tourist busses and tram. We end up day at Grand bazaar (the oldest covered bazaar with 4000 shops and 16 gates.