Pyramid (Old Location)
The initial spawn location, where you appeared when you first join the server, where you went when you typed in /spawn and where you went when you die, was inside the great Pyramid as Spawn. Inside there was some useful information to get you started, examples of several mob heads that drop throughout the server and also the portal to the Wither Arenas.
The Pyramid was not transferred to the new 1.9+ spawn because of a design philosophy around circles and a focus on making it quick to get to the world portals. The spawn point was now on a circular junction next to the world portals & minigames. The portal to the Wither Arenas was now in the world portal building.
In the 1.13 + 1.14.4 spawn, the pyramid is not present.