A city of endless lights. There were two Zanarkands. The real Zanarkand that was anihilated by Bevelle in the War of Machina 1000 years ago, and the Dream Zanarkand, which was the exact reproduction of what Zanarkand was before its destruction, directly from Yu Yevon's imagination. It became the Fayth's dream. Dream Zanarkand is Tidus's home, Zanarkand is Shuyin's home.
"To Zanarkand" is a nice piano song. And Zanarkand is a nice town, ya!