Shadowing Dan Brown Robert Langdon in Istanbul

The Basilica Cistern, or Cisterna Basilica (Greek: Βασιλική Κινστέρνα, Turkish: Yerebatan Sarnıcı or Yerebatan Saray, "Subterranean Cistern" or "Subterranean Palace"), is the largest of several hundred ancient cisterns that lie beneath the city of Istanbul, Turkey.

Hagia Sophia (/ˈhɑːɡiə soʊˈfiːə/; from Koinē Greek: Ἁγία Σοφία, romanized: Hagía Sophía; Latin: Sancta Sophia, lit. 'Holy Wisdom'), officially the Hagia Sophia Grand Mosque (Turkish: Ayasofya-i Kebir Camii Şerifi)[2] and formerly the Church of Hagia Sophia,[3] is a Late Antique place of worship in Istanbul. Built in 537 as the patriarchal cathedral of the imperial capital of Constantinople, it was the largest Christian church of the eastern Roman Empire (the Byzantine Empire) and the Eastern Orthodox Church, except during the Latin Empire from 1204 to 1261, when it became the city's Roman Catholic cathedral. In 1453, after the Fall of Constantinople to the Ottoman Empire, it was converted into a mosque. In 1935 the secular Turkish Republic established it as a museum. In 2020, it re-opened as a mosque.

Sultan Ahmed Mosque (Turkish: Sultan Ahmet Camii), also known as the Blue Mosque, is an Ottoman-era 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.

There are several documents suggesting that the name of the bazaar was first "New Bazaar". The and got its name "Egyptian Bazaar" (Turkish: Mısır Çarşısı) because it was built with the revenues from the Ottoman eyalet of Egypt in 1660. The word mısır has a double meaning in Turkish: "Egypt" and "maize". This is why sometimes the name is wrongly translated as "Corn Bazaar". The bazaar was (and still is) the center for spice trade in Istanbul, but in recent years shops of other types are gradually replacing the sellers of spices. The building itself is part of the külliye (complex) of the New Mosque. The revenues obtained from the rented shops inside the bazaar building were used for the upkeeping of the mosque.

The Grand Bazaar (Turkish: Kapalıçarşı, meaning ‘Covered Market’; also Büyük Çarşı, meaning ‘Grand Market’) in Istanbul is one of the largest and oldest covered markets in the world, with 61 covered streets and over 4,000 shops on a total area of 30,700 m2, attracting between 250,000 and 400,000 visitors daily. In 2014, it was listed No.1 among the world's most-visited tourist attractions with 91,250,000 annual visitors. The Grand Bazaar at Istanbul is often regarded as one of the first shopping malls of the world.