From the PDF introduction
An Adventure Site Web Enhancement for Sharn: City of Towers
Sharn: City of Towers is a new book for use with the EBERRON Campaign Setting. It provides a wealth of history and game information about the city of Sharn, but you need not set an entire campaign there to make use of this product. Characters can visit Sharn for many reasons, and they can travel the length and breadth of Khorvaire via Sharn’s airships, which leave regularly from Lyrandar Tower.
Designer Darrin Drader updates and expands the information about Lyrandar Tower, otherwise known as the airship docking tower, in Sharn. As always, feel free to adapt the material presented here as you see fit to make it work with your campaign.