Mosque of Mohammed Ali
From the Super Mario Wiki
The Mosque of Mohammed Ali (Arabic: مسجد محمد علي; Turkish: Mehmet Ali Paşa Camii) is a mosque in Cairo, Egypt. Luigi visited it during the events of the game Mario is Missing!. A Gingerbread Clock was stolen from the mosque, and the plumber had to return it. He was rewarded a prize of 1,400 dollars.
Pamphlet Information from Mario is Missing!
The Mohammed Ali Mosque was built by a sultan in 1430[sic] using the Turkish style of the Ottoman Empire. Its nickname, The Alabaster Mosque, comes from the valuable white stone that covers the temple's facade. The clock tower on the courtyard's western side was a gift to the sultan by King Louis Philip of France in return for the stone obelisk, which now stands in front of France's Place de la Concorde. Egyptian sultans lived in the mosque until 1517. It is now used only for prayer.