Here are some tidbits:
For hundreds of years brothers of royal heirs were either killed or locked in luxurious prisons to avoid coups. (Mehmet III killed 19 of his brothers when he ascended the throne.)
Christian slave boys were forcibly turned into a military aristocracy who were not allowed to marry. (When they did get the right to marry, the organization descended into rent-seeking and corruption.)
Great taste in hats. (Just look at this thing!)
They also had a surprising amount of religious toleration for their time.