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Photo: Alexxx1979, CC BY-SA 4.0 via Wikimedia Commons
If you are already in the area, it's worth considering to visit this waterside neo-Baroque manor, built in the 19th century for the countryside and hunting excursions of the Ottoman dynasty. The area, where the Göksu River flows into the Bosphorus, was known as "the Sweet Waters of Asia" by the pioneer European travellers of the epoch (as opposed to "the Sweet Waters of Europe", another contemporary elite recreational area on the other side of the city, where the Kağıthane and Alibeyköy Rivers empty into the Golden Horn).
Küçüksu Pavilion, Littlewater Pavilion a.k.a. Göksu (Skywater) Pavilion, is a summer pavilion in Istanbul, Turkey, situated in the Küçüksu neighborhood of Beykoz district on the Asian shore of the Bosphorus between Anadoluhisarı and the Fatih Sultan Mehmet Bridge. The pavilion was used by Ottoman sultans for short stays during country excursions and hunting.
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Anadolu Hisarı
A medieval citadel on the Bosphorus at the mouth of the Göksu creek. It was built in the late 14th century to control (polite word for "choke off") shipping along the Bosphorus, which narrows to 660 m at this point. It worked in tandem with Rumeli Citadel, built some 50 years later on the European bank. It fell into disrepair but was restored in the 1990s. You can't go in, but it's a pleasant setting; the entire village is named Anadolu Hisarı after the fort and has many traditional wooden houses (yalı). Ferries along the Bosphorus call here.
One of the oldest functioning academies.
About 15 minutes walking north of Beylerbeyi lies the historical fishing village Çengelköy. Its long history is attested by an 800-year-old sycamore tree on one of the two main terraced squares, and the Byzantine Aya Yorgi church. The restaurants and piers of Çengelköy offer some of the best panoramas along the Bosphorus, including a view on the old city under the first bridge. The neighborhood was popular amongst TV directors during the 1970s and it has become a (possibly the most) popular location to have lunch or dinner on the eastern side of Istanbul. Many historic mansions have been restored and multiple boutique chocolatiers were opened. Most restaurants in Çengelköy don't offer alcoholic beverages. Exceptions include the restaurant at the main pier (Iskele), and Tapasuma, the restaurant of hotel 'Sumahan on the Water', located in a former Ottoman Raki distillery. You can get there by taking bus 15 or 15F from Üsküdar, it is just a few stops further than Beylerbeyi. Going to Çengelköy by car is not advised; traffic can be very intense on the narrow road along this side of the Bosphorus.
is a small port with a popular fishing dock. There are many restaurants: those on the port-side serve alcohol and are moderately expensive, those down the side-streets are cheaper. Notable buildings include the 18th-century Hamid-i Evvel mosque, and the 19th-century highway tunnel (which is closed as of Dec 2018). But the standout attraction is the palace.