The Tower of Grey was the location that the adventuring group of the same name operated out of. It was constructed in Greenham, and its presence boosted the city's struggling economy. The airship, Dirty Deeds Done Dirt Cheap was docked on top of the Tower.
A previous version of the tower was destroyed when Steve Meloncamp came to visit, and he, Toby and Borris tried to build a tank. A lot of construction was needed for the next iteration, cause a large amount of debt from Ferrim Pecunia, the bank of Pelor's Hope.