East Watchtower
“To power their legions of warmachina, the Garleans require a steady supply of the aether-based fuel known as ceruleum. With Bluefog housing the largest deposit in Eorzea, the Empire has begun their own mining operation but a stone's throw from the allied refineries, heightening tensions in the area and prompting the construction of two watchtowers.
— In-game description
East Watchtower is a landmark in Bluefog, Northern Thanalan.