Visit the Abbasid Empire!
And here's why:
A Taste of the Literature
Art and Architecture
We're really advanced - come and cash in on it!
(*Don't be scared, though - we're not all desert. Above is the Mediterranean Sea, a vital part of our caliphate's prosperity).
What do we mean, "advanced"?
Our scholars have made your stargazing possible by developing our understanding of light (Optics, Ibn al-Haytham), made your voyage here possible (the astrolabe), helped you structure your days with time and calendars (the armillary sphere), made trade and...well, almost every technology more efficient through advanced mathematics (al-jabr, Al-Kwharizmi), and even made you healthier with experimental methods of making scientific discoveries in addition to Greek ideas - leading to such works as the Comprehensive Book by al-Razi. See the place where this all came to be, come visit!