Vellie
Vellie is a quiet peaceful village floating in the sky. Amongst it's residents are Otus, Geddy, The Professor, Mandolyn and Bomboman. A flying ferry connects Vellie to Advent, a big city.
Advent
Advent is a big city floating in the sky. Amongst it's buildings are a librabry, a clocktower, shops, a theatre, etc.
Owl Temple
...or the Owl Temple ruins. It's a temple in the clouds above Vellie, and it's structure is quite weak. It's been known to shift and turn, and it is usually dangerous to travel through it's ruins. If one were to get through the ruins safely, it would act as a shortcut to Advent from Vellie.
Otus's house
A nice little house in Vellie, left to Otus by his parents. Asio usually comes by this house to pick up Otus for class. It's got all the tidbits a small owl like Otus needs, including a bookshelf, a stove and a teapot that Otus usually leaves on the burner during the night.
Buccanary's shop
An adventurer's emporium! It's got all the gadgets and supplies one need for safe exploration. On it's shelves, Otus can find hats, clothing, collectables, aswell as a canteens filled with Buccanary's homemade soup. Otus should return to Buccanary every-so-often, to drop off any of the Buccanary ring tokens he finds on his journey.