The tree of Yggdrasil can be found perched atop the Observatory.
Yggdrasil is revered as the holy 'world tree' and is worshipped by the Celestrians who offer Benevolessence to it in an attempt to make the golden Fyggs bloom. It is a commonly held belief that doing so will grant them passage to salvation aboard a heavenly carriage (the Starflight Express).
Later, it is revealed to be the Grand Architect Zenus's daughter, Celestria. She took the form of Yggdrasil to shield the mortals of the Protectorate from Zenus's wrath until such a time as they could prove that the humans were not all bad. She created the angelic race of Celestrians to aid her with this cause.
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