History from the 1857 mutiny, I guess. Lucknow is not the cleanest or best kept city around.. but its better than the rest of UP.
And the food is going to be good - especially the biryani. Though having lived in Hyderabad for over 15 years I prefer the Hyderabadi variant.
http://www.foodmall.org/entry/luckno...-in-the-world/