Bevelle
Bevelle is the largest city in Spira, though you won’t have the opportunity to explore much of it. You will visit the “Tower of Light” and the Highbridge, as well as the Bevelle Temple.
There are several events that take place in the various areas of Bevelle. The first time you visit, it is to interrupt the wedding of Maester Seymour to Yuna. Use the link below for more information:
22) Bevelle
Walkthrough Guide
The Tower of Light and interrupting the ceremonies at the altar, completing the fifth Cloister of Trials before being thrown into the Via Purifico prison.
Later on, after being captured, the team is thrown into the Via Purifico, which is a jail of sorts in the lower portions of Bevelle:
23) Via Purifico
Walkthrough Guide
Helping Yuna locate each of her team members, firstly, and then assisting Tidus, Wakka, and Rikku escape the underwater sections past Evrae Altana.
Finally, the story takes the team back to the Bevelle Highbridge after they have obtained the Airship:
29) Airship and Highbridge
Walkthrough Guide
Gaining control of the Airship and access to the NavMap which allows you to travel all over Spira.
Except for the Highbridge, you cannot revisit these areas after you have passed through for the first time.