Ziggurat

The Ziggurat is a structure below Whitestone. The Briarwoods seized Whitestone and prepared the Ziggurat for a ritual in service to Vecna. The Briarwood letters mention a manse inside the Ziggurat.

At the top of the Ziggurat is a strange, hovering black orb that sucks in anything that touches it and disables all magic within a specific radius.

The Ziggurat was used as a war council room by Vox Machina and their allies in Whitestone, as the magic-syphoning orb prevented any Scrying or other magical means of spying on their plans.

Scanlan Shorthalt and Lionel Gayheart later discovered that another Ziggurat was located on the continent of Marquet, within the Smolder Crown Mountain.