Grand Post Office

The Istanbul Postal Museum, aka PTT Museum Istanbul (Turkish: PTT İstanbul Müzesi), is a postal museum dedicated to the historical development of mail and telecommunication services in the Ottoman Empire and Turkey, exhibiting related equipment and instruments as well as a collection of postage stamps. It was established in 2000 by the Turkish Post, and is situated inside the Grand Post Office building at Sirkeci quarter of Fatih district in Istanbul, Turkey.

The Tomb of Abdul Hamid I (Turkish: I. Abdülhamid Türbesi) is the final resting place of Ottoman Sultan Abdul Hamid I located at Fatih in Istanbul, Turkey.

The Istanbul 4th Vakıf Han is a historical large office building located in the Sirkeci neighbourhood of the Eminönü quarter within the Fatih district of Istanbul, Turkey. It is owned by the Foundations Administration (Turkish: Vakıflar Genel Müdürlüğü). Currently, it is used as a five star hotel of the World Park Hotel chain named Legacy Ottoman.

Sirkeci (pronounced [ˈsiɾkedʒi]) is a neighborhood in the Eminönü quarter of the Fatih district in Istanbul, Turkey. The neighborhood borders to the north the mouth of the Golden Horn, to the west the neighborhood of Bahçekapı, to the east the Topkapı Palace area, and to the south the Cağaloğlu neighborhood. It hosts the Sirkeci railway station, the easternmost terminus of the Orient Express, a historic long-distance passenger train service in Europe that operated between Paris and Istanbul in the period between 1883 and 2009.The neighborhood consists mostly of commercial and tourist-oriented buildings. A combination of small shops, hans (larger workshops) and offices intermingle with boutique hotels, traditional Turkish restaurants, Turkish and foreign-language bookstores, and tourist offices. In the Byzantine period, the area was known as Prosphorion (Ancient Greek: Προσφόριον).

Cağaloğlu is a quarter located in the Fatih district of Istanbul, Turkey. Much of the publishing industry in Istanbul is located in Cağaloğlu. It is also famous for its ancient hamam, or Turkish bath, known as the Cağaloğlu Hamam.

Rüstem Pasha Medrese (Turkish: Rüstem Paşa Medresesi) is a former medrese, located in Fatih district of Istanbul, Turkey. It was commissioned by Ottoman statesman and grand vizier Rüstem Pasha, and built by court architect Mimar Sinan in 1551.

The second Arab siege of Constantinople in 717–718 was a combined land and sea offensive by the Muslim Arabs of the Umayyad Caliphate against the capital city of the Byzantine Empire, Constantinople. The campaign marked the culmination of twenty years of attacks and progressive Arab occupation of the Byzantine borderlands, while Byzantine strength was sapped by prolonged internal turmoil. In 716, after years of preparations, the Arabs, led by Maslama ibn Abd al-Malik, invaded Byzantine Asia Minor. The Arabs initially hoped to exploit Byzantine civil strife and made common cause with the general Leo III the Isaurian, who had risen up against Emperor Theodosius III. Leo, however, tricked them and secured the Byzantine throne for himself. After wintering in the western coastlands of Asia Minor, the Arab army crossed into Thrace in early summer 717 and built siege lines to blockade the city, which was protected by the massive Theodosian Walls. The Arab fleet, which accompanied the land army and was meant to complete the city's blockade by sea, was neutralized soon after its arrival by the Byzantine navy through the use of Greek fire. This allowed Constantinople to be resupplied by sea, while the Arab army was crippled by famine and disease during the unusually hard winter that followed. In spring 718, two Arab fleets sent as reinforcements were destroyed by the Byzantines after their Christian crews defected, and an additional army sent overland through Asia Minor was ambushed and defeated. Coupled with attacks by the Bulgars on their rear, the Arabs were forced to lift the siege on 15 August 718. On its return journey, the Arab fleet was almost completely destroyed by natural disasters. The siege's failure had wide-ranging repercussions. The rescue of Constantinople ensured the continued survival of Byzantium, while the Caliphate's strategic outlook was altered: although regular attacks on Byzantine territories continued, the goal of outright conquest was abandoned. Historians consider the siege to be one of history's most important battles, as its failure postponed the Muslim advance into Southeastern Europe for centuries.

The Neorion Harbour (Greek: Λιμὴν τοῦ Νεωρίου or Λιμὴν τῶν Νεωρίων) was a harbour in the city of Constantinople, active from the foundation of the city in the 4th century until the late Ottoman period. It was the first port to be built in Constantinople after its re-foundation by Constantine the Great, and the second in the area after the Prosphorion, which was the port of ancient Byzantium.

İstanbul High School, (Turkish: İstanbul Erkek Lisesi, German: Istanbuler Gymnasium) also commonly known as İstanbul Erkek Lisesi, abbreviated İEL, is one of the oldest and internationally renowned high schools of Turkey. The school is considered elite among Turkish public high schools. Germany recognizes the school as a Deutsche Auslandsschule (German International school). İstanbul Erkek Lisesi is located in Cağaloğlu, İstanbul. The school has changed several buildings throughout its history. Since 1933 the school has used its current building. The building was designed by architects Alexander Vallaury and Raimondo D'Aronco and inaugurated in 1882 as the Düyun-u Umumiye (Council of Ottoman Revenues and Debts Administration) Building, which overlooks the entrance to the Bosphorus and the Golden Horn. A new building adjacent to the main historical building was inaugurated in 1984, providing new boarding and sports facilities. The primary languages of instruction are Turkish and German. The secondary foreign language of instruction is English.

Nallı Masjid (Turkish: Nallı Mescit), also known as İmam Ali Mescidi or Babıali Mescidi, is a late 19th-century small mosque located at Ankara Street northwest of the historic Sublime Porte building (which is the Istanbul Governor's Office today), at Cağaloğlu quarter of Fatih district of old Istanbul, Turkey.

The Tomb of Turhan Sultan (Turkish: Turhan Sultan Türbesi) is the mausoleum of five Ottoman sultans, located at Fatih in Istanbul, Turkey. It was built in 1663 for Turhan Sultan, chief queen consort of Sultan Ibrahim and mother of Sultan Mehmed IV.

The Battle of Pegae (Bulgarian: битка при Пиги) was fought between 11 and 18 March 921 in the outskirts of Constantinople between the forces of the Bulgarian Empire and the Byzantine Empire during the Byzantine–Bulgarian war of 913–927. The battle took place in a locality called Pegae (i.e. "the spring"), named after the nearby Church of St. Mary of the Spring. The Byzantine lines collapsed at the very first Bulgarian attack and their commanders fled the battlefield. In the subsequent rout most Byzantine soldiers were killed by the sword, drowned or were captured. In 922 the Bulgarians continued their successful campaigns in Byzantine Thrace, capturing a number of towns and fortresses, including Adrianople, Thrace's most important city, and Bizye. In June 922 they engaged and defeated yet another Byzantine army at Constantinople, confirming the Bulgarian domination of the Balkans. However, Constantinople itself remained outside their reach, because Bulgaria lacked the naval power to launch a successful siege. The attempts of the Bulgarian emperor Simeon I to negotiate a joint Bulgarian–Arab assault on the city with the Fatimids were uncovered by the Byzantine and countered. The primary sources for the battle are Theophanes Continuatus, Leo the Grammarian's Chronicle, the continuation of George Hamartolos' Chronicle and John Skylitzes' Synopsis of Histories.