The Tower of Troubles is a Mages guild where young wizards and sorcerors are trained in the Art. It arose as a compromise between the gods of Bareel and the human practitioners of magic.
Specially treated troll flesh dried in strips like jerky which heals in small doses.
"...the city was built on many levels, linked by stone bridges. But with the improvements in diet and corresponding increase in stature and strength of the populace, these bridges became too low, and the people would hit their heads. The bridges were eventually done away with in 1764, but the scars on the walls where they once jutted out remain, and in Low Bridge Street there is still one extant bridge, measuring about 6' high." - Chronicler Rasill, Mondopedia, Vol II (The Lands of Hyellia)