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The Great Palace of Constantinople (Greek: Μέγα Παλάτιον, Méga Palátion; Latin: Palatium Magnum, Turkish: Büyük Saray), also known as the Sacred Palace (Greek: Ἱερὸν Παλάτιον, Hieròn Palátion; Latin: Sacrum Palatium), was the large Imperial Byzantine palace complex located in the south-eastern end of the peninsula now known as Old Istanbul (formerly Constantinople), in modern Turkey. It served as the main Imperial residence of the Eastern Roman or Byzantine emperors until 1081 and was the centre of imperial administration for over 690 years. Only a few remnants and fragments of its foundations have survived into the present day.

The Church of the Virgin of the Pharos (Greek: Θεοτόκος τοῦ Φάρου, Theotokos tou Pharou) was a Byzantine chapel built in the southern part of the Great Palace of Constantinople, and named after the tower of the lighthouse (pharos) that stood next to it. It housed one of the most important collections of Christian relics in the city, and functioned as the chief palatine chapel of the Byzantine emperors.

The Blue Mosque in Istanbul, also known by its official name, the Sultan Ahmed Mosque (Turkish: Sultan Ahmet Camii), is an Ottoman-era historical imperial mosque located in Istanbul, Turkey. A functioning mosque, it also attracts large numbers of tourist visitors. It was constructed between 1609 and 1616 during the rule of Ahmed I. Its Külliye contains Ahmed's tomb, a madrasah and a hospice. Hand-painted blue tiles adorn the mosque’s interior walls, and at night the mosque is bathed in blue as lights frame the mosque’s five main domes, six minarets and eight secondary domes. It sits next to the Hagia Sophia, the principal mosque of Istanbul until the Blue Mosque's construction and another popular tourist site. The Blue Mosque was included in the UNESCO World Heritage Site list in 1985 under the name of "Historic Areas of Istanbul".

The Palace of Daphne (Greek: Δάφνη) was one of the major wings of the Great Palace of Constantinople, the capital of the Byzantine Empire (modern Istanbul, Turkey). According to George Codinus, it was named after a statue of the nymph Daphne, brought from Rome. The exact layout and appearance of the palace is unclear, since it lies under the Sultan Ahmed Mosque, and the only surviving evidence comes from literary sources. Jonathan Bardill, however, has suggested that the peristyle with mosaics adjoining an apsed hall, excavated by the Walker Trust excavations in 1935-7 and 1952-4, could be the Augusteus of the Daphne Palace.

The German Fountain (Turkish: Alman Çeşmesi German: Deutscher Brunnen) is a gazebo styled fountain in the northern end of old hippodrome (Sultanahmet Square), Istanbul, Turkey and across from the Mausoleum of Sultan Ahmed I. It was constructed to commemorate the second anniversary of German Emperor Wilhelm II's visit to Istanbul in 1898. It was built in Germany, then transported piece by piece and assembled in its current site in 1900. The neo-Byzantine style fountain's octagonal dome has eight marble columns, and dome's interior is covered with golden mosaics.

The Great Palace Mosaic Museum (Turkish: Büyük Saray Mozaikleri Müzesi), is located close to Sultanahmet Square in Istanbul, Turkey, at Arasta Bazaar. The museum houses mosaics from the Byzantine period, unearthed at the site of the Great Palace of Constantinople.

Sultanahmet Square (Turkish: Sultanahmet Meydanı), or the Hippodrome of Constantinople (Greek: Ἱππόδρομος τῆς Κωνσταντινουπόλεως, romanized: Hippódromos tēs Kōnstantinoupóleōs; Latin: Circus Maximus Constantinopolitanus; Turkish: Hipodrom) is a square in Istanbul, Turkey. Previously, it was a circus that was the sporting and social centre of Constantinople, capital of the Byzantine Empire. The word hippodrome comes from the Greek hippos (ἵππος), horse, and dromos (δρόμος), path or way. For this reason, it is sometimes also called Atmeydanı ("Horse Square") in Turkish. Horse racing and chariot racing were popular pastimes in the ancient world and hippodromes were common features of Greek cities in the Hellenistic, Roman and Byzantine eras.

The Baths of Zeuxippus were popular public baths in the city of Constantinople, the capital of the Byzantine Empire. They were built between 100 and 200, destroyed by the Nika revolt of 532 and then rebuilt several years later. They were so called because they were built upon the site where a Temple of Zeus (Jupiter) had formerly existed. They were built around 500 yards south of the much older baths of Achilles of the earlier Greek Acropolis in Byzantion. The baths were famed primarily for the many statues that were built within, and the famous people they each represented. However, they were later used for military purposes, during the seventh century. Excavations of the site and the Baths were made in 1928.

The Obelisk of Theodosius (Turkish: Dikilitaş) is the Ancient Egyptian obelisk of Pharaoh Thutmose III re-erected in the Hippodrome of Constantinople (known today as At Meydanı or Sultanahmet Meydanı, in the modern city of Istanbul, Turkey) by the Roman emperor Theodosius I in the 4th century AD.

On 12 January 2016, a suicide attack in Istanbul's historic Sultanahmet district killed 13 people, all foreigners, and injured 14 others. The attack occurred at 10:20 local time, near the Blue Mosque and the Hagia Sophia, an area popular among tourists. The attacker was Nabil Fadli (Arabic: نبيل فضلي), a Syrian member of the Islamic State.

The Hagia Sofia Mansions Istanbul, Curio Collection by Hilton, previously known as Hotel Yeşil Ev, (literally: Hotel Green House) is a historic wooden mansion, located in the Sultanahmet neighborhood of Istanbul, Turkey, which is used as a hotel after restoration. The premises is run by the Dorak Holding.

The Firuz Ağa Mosque (Turkish: Firuz Ağa Camii) is a 15th-century Ottoman mosque in the Fatih district of Istanbul, Turkey. It was built by Firuz Ağa, the head treasurer of Sultan Beyazıt II. The marble sarcophagus of Firuz Ağa is located in the mosque complex. The mosque is located in the historical center of the city, on the Divanyolu Street, close to other prominent historical landmarks, Sultanahmet Mosque, Aya Sofya and Basilica Cistern.