The Cağaloğlu Hamam, finished in 1741, is the last hamam to be built in the Ottoman Empire. It was constructed in Istanbul Eminönü, in Alemdar, on Hilal-i Ahmer street as a public hamam to raise revenue for the library of Sultan Mahmud I, previously situated inside the mosque of Ayasofya. It was begun by one of the head architects of that time, Suleyman Aga, and finished by Abdullah Aga. It is the last example of its kind to be built in Istanbul and is still operational today.