Celestis (Stargate)

In the science fiction series Stargate SG-1, Celestis is the Ori capital or 'City of the Gods'.

Travel
It is normally impossible for anyone to travel there, and, in one case, the traveler was there in mind but not in body. It is also where the Priors are created, and where the Doci, the one who intercedes to and speaks the will of the Ori, resides. In the third episode of Season Nine, Vala Mal Doran and Daniel Jackson travelled to Celestis, with the aid of a Prior, alerting the Ori to life in our galaxy. The only known way of entry is to use a ring transporter from the unnamed planet that Daniel and Vala were transported to in "Avalon", the season 9 premiere.

Structure
The city is surrounded by a shallow lake and rises above it many stories. It almost looks to be a giant building with many different sections, comparable to a renaissance fortress or chateau. Inside is the residence of the Ori, a room filled with fire, where the Doci communicates with the Ori.

Adria
In Season 10, the Orici Adria, leader of the Ori army, described her personal shield as having "a piece of the city of Celestis" within it.