Eyüpsultan or Eyüp is a municipality and district of Istanbul Province, Turkey. Its area is 228 km², and its population is 422,913. The distric…Eyüpsultan or Eyüp is a municipality and district of Istanbul Province, Turkey. Its area is 228 km², and its population is 422,913. The district extends from the Golden Horn all the way to the shore of the Black Sea. Eyüp is also the name of a prominent neighborhood and former village in the district, located at the confluence of the Kâğıthane and Alibey streams at the head of the Golden Horn. The Eyüp neighborhood is a historically important area, especially for Turkish Muslims, due to the presence of the tomb of Abu Ayyub al-Ansari, the prominent Medinan companion and standard-bearer of the Islamic prophet Muhammad.