Founders' homeworld (2372)
The new Founders' homeworld was located at secret coordinates deep in Dominion space in the Gamma Quadrant. The Great Link appeared to cover much of the planet's surface, leaving very little land mass.

The  was guided by the Jem'Hadar to this planet in 2372, when the Founders forced Odo to return to the Link to face judgment for killing another Changeling. () 

Odo again returned to the planet at the end of 2375, after the conclusion of the Dominion War, to cure the morphogenic virus infecting the Link and convince them that the solids did not pose a threat to them. ()

Some time prior to 3189, the Founders had abandoned this world for a third homeworld, and, by 3189, had once again relocated to a fourth planet. ()

Appendices

Background information 
With the  having been attacked in DS9 Season 3 installment , the possibility of depicting a new homeworld for the species in the , which Paramount insisted not be a cliff-hanger, was ruled out by the DS9 writing staff. "We knew that for just one episode, we couldn't justify building the sets for the Founders' planet," explained Robert Hewitt Wolfe. ()

The second Founder homeworld was planned out in sketches by John Eaves, dated . One of these illustrated the planet as being lush with forest land, also having crags in the distance, and ornate pillars towering over the greenery. Another of the sketches showed the Founders' homeworld much as it eventually appeared, with a rocky isle surrounded by the ocean-like Great Link. () Visual Effects Supervisor David Stipes was also instrumental in recreating the Founders' homeworld for . "It was incredibly complicated to do," he recalled. "The little island that they built, had a huge sunset cyclorama that went way around the set. It was a hundred feet long. It might have been even longer than that, because it covered three sides of the set." (Cinefantastique, Vol. 32, Nos. 4/5, pp. 89 & 90)

When the Founders' homeworld made a final reappearance in series finalé , the task of recreating the planet again fell to David Stipes. The live action portion of the footage, which featured new shots, was directed by Allan Kroeker, and involved a new island set as well as a cyclorama. (Cinefantastique, Vol. 32, Nos. 4/5, pp. 89, 91, & 90) The set was on Paramount Stage 7, and the island was made of fiberglass. ()

According to Star Trek: Star Charts (pp. 71 & 75), both of the Founder homeworlds were class R planets.

Apocrypha 
In the video game Star Trek Online, the planet is named Empersa. In the mission "Tenebris Torquent", part of the "Victory is Life" expansion campaign, Elim Garak sets a Hur'q-luring transponder on the planet as a form of insurance against the Female Changeling and her loyalists in the Dominion. In the following mission "Home", players join a fleet led by Odo to defend Empersa first from space, and then fighting against the Hur'q swarms on the "shore" of the Great Link itself. Eventually, Julian Bashir is able to use the ketracel-white aboard a Hur'q dreadnought to liberate the Hur'q from their savage ways and cause them to depart Empersa. The defense of Empersa from a Hur'q invasion is the last phase of the Gamma Quadrant Battlezone.

External link 
 

Unnamed planets
Homeworlds
Dominion