The Embassy is a spire built by the obesk when they arrived to Earth to serve as their main headquarters and residence during their investigation of the Call and their relations with humankind.
It appears to be a tall black and magenta construct located on an island in an unknown ocean. Long black tendrils extend from the base of the spire onto the island's ground.
The spire is made of black corru, a very hard and dense type of corru used for structural applications[1].
In the past, the Embassy was much larger that it is in the current year of events, and the island was smaller[2]. This is due to the Collapse, the event in which the Embassy and the polygonation spires melted following an attack by a disruptive signal. Following this event, the obesk retreated from Earth, and very few visit it anymore.