The Presidium was the inner ring of the Citadel, where all the corresponding wards are connected. Only the richest of the Citadel's citizens could live there, and it was home to the Citadel Tower, where the Citadel Council (and later, the Dominion Senate) themselves resided, the Citadel Embassies and C-Sec headquarters (and later CPD headquarters). The ring itself is about 10km wide, with he Presidium Lake making up the length of it, dotted with numerous buildings and facilities. The Presidium also boasts an artificial sun, as well as an ecology equivalent to that of a G-class garden world. Unfortunately, like the rest of the Citadel, the Presidium was destroyed when the station crashed into Eos in 2253 CE.