Free Walking Sightseeing Tour #1 in İstanbul, Turkey

Atik Mustafa Pasha Mosque is a former Eastern Orthodox church in Istanbul, converted into a mosque by the Ottomans. In Çember Sokak in the neighbourhood of Ayvansaray, in the district of Fatih, Istanbul, it lies just inside the walled city at a short distance from the Golden Horn, at the foot of the sixth hill of Constantinople.

Wikipedia: Atik Mustafa Pasha Mosque (EN)

Iskender Bey Fountain or Iskender Pasha Fountain is an Ottoman-era fountain located in Ayvansaray neighborhood, Ayvansaray Kuyusu Street, Fatih district of Istanbul province. It was built by Iskender Bey, who has a tomb in Kanlıca Mosque.

Wikipedia: İskender Bey Çeşmesi (TR)

Muhammad El-Ansari Tomb is the tomb of Muhammad El-Ansari on the Golden Horn coastal road in the Ayvansaray neighborhood of Fatih district of Istanbul province. He came from Medina and participated in the Arab expedition for the conquest of Istanbul and a tomb was built where he died. It is narrated that he was a friend of Abu Ayyub al-Ansari. The place where the tomb is located is also known as "Babul Ensari", "Ensar Dede" and "Parmakkapı".

Wikipedia: Muhammed El-Ensari Türbesi (TR)

The Church of Saint Mary of Blachernae is an Eastern Orthodox church in Mustafa Paşa Bostanı Sokak in Ayvansaray in the Fatih district of Istanbul, just inside the old walled city. During the latter part of the Byzantine period, the original church complex on the site was one of the most important sanctuaries of Byzantium, arguably outstripping Hagia Sophia in importance due to its proximity to the Palace of the Blachernae. The Byzantine church complex was destroyed in 1434, and in the nineteenth century a small new church was built on the site. Today it is protected by a high wall, and fronted by a garden.

Wikipedia: Church of St. Mary of Blachernae (EN)

The Palace of the Porphyrogenitus, known in Turkish as the Tekfur Sarayı, is a late 13th-century Byzantine palace in the north-western part of the old city of Constantinople. An annex of the greater palace complex of Blachernae, it is the best preserved of the three Byzantine palaces to survive in the city, and one of the few relatively intact examples of late Byzantine secular architecture in the world.

Wikipedia: Palace of the Porphyrogenitus (EN)