Sacred Relics (Topkapı Palace)
The various relics of Muhammad, his followers, and other items purportedly associated with Muhammad were brought to Topkapı Palace in Istanbul, where they remain to this day.
Tokat
The most important landmark is Tokat Castle, an Ottoman citadel with 28 towers on a rocky hill overlooking the town. Vlad the Impaler (Count Dracula) was imprisoned in one of its dungeons. Other sights include the remains of several Greek Orthodox churches and a cathedral, the Garipler Mosque dating to the 12th century, the Ali Paşa Mosque (16th century), and the Gök Medrese (Pervane Bey Darussifasi), which was constructed in 1270. It was founded as a school of theology, and is now converted into a museum, housing archaeological finds from the area.