<prompt> Translate the following text to EnglishVituo vya utalii maarufu zaidi vya Istanbul viko katika wilaya ya Sultanahmet, karibu na ncha ya peninsula ya Saray-Bornu, na zote ziko kwa umbali wa kutembea kutoka kwa kila mmoja.  <response>: Istanbuls most popular tourist attractions are concentrated in the Sultanahmet district, near the tip of the Saray Burnu peninsula, and are all within easy walking distance of each other. 