The tower of Cult

As a build
The tower of cult started long ago. After the protest in the plaza had gone awry with headcrabs, a single Cult of Doggo head was placed walking away from the protest scene. Later, a Pannington head was placed on top of that. More and more heads kept being placed until eventually it towered over the rest of the plaza. There were also a few small builds added around the tower, such as a Shawarma stand ran by Jelly serving some nearby headcrabs and a small airplane flown by Evilball attempting to 9/11 the tower.

As a comic
Many meta comics were made about the tower in question. The first of which, was authored by cult and can be read here. A continuation of the original comics was then made in a collaboration between Cult, Bananas, and Jandro, which can be read here. Bananas then went a step further and wrote a prequel for the story, which can be read here. Eventually, the comic saga reached an end when Banana released "Tower of Cult: ENDGAME" which was a deluxe version of the entire story so far, including new colored-in backgrounds, and a grand finale ending. read it here. While nothing new has been added to the story since, Bananas also eventually released a video version of the original comic. watch it here.