The Aquitaine

The Aquitaine was the desert hideout of businessman François LeBeau. It was a large fortress with the appearance of an apartment building located in New Mexico.

It was probably constructed before the Stormwatchers team was formed, because the old crime-fighters seem to remember the exact location of the desert fortress in the climax of the movie Stormwatchers.

Construction
Presumably built in the early 1960s, it was a relaxing spot with a beautiful view of the desert, where François LeBeau could sit down and relax with nobody around to irritate him. François really loved the New Mexico desert, and felt at peace in it's surroundings. He decided to build a desert retreat to escape the stressful New York life when it was too much.

Events of Stormwatchers
We first see the location during the final battle of the film, which takes place on it's roof terrace. Francois confirms he is the mastermind behind Phantom Soldier's murder and Strikeseeker's presumed death. He explains that his plan was to sell nuclear weapons to an Arabic terrorist named Muhammad al-Mualim and in return regain his lost millions and revive his failing company, Dagger Consolidated. Phantom Soldier discovered Francois and Muhammad's plot, so he killed him to keep quiet. Korsakoff and Eagle Eye attempt to stop him, but Francois subdues them both.

Soon after, Captain Ares and Strikeseeker, who survived the burning building (which leaves Francois both shocked and horrified), arrive at the Aquitaine and shoot Francois. It looks like he's dead, but he quickly gets up and punches Ares in the face. Then the television turns on, and Muhammad reveals that the plan cannot happen, as his terrorist organisation has gone bankrupt and his family had died. Francois bursts into a rage after realising he gave him nuclear weapons for nothing. The whole team agrees to keep quiet about the failed plan and not tell anyone. Korsakoff however refuses to remain silent and prepares to leave, believing that if something like that would ever happen again, the world would be prepared to stop it. Eagle Eye fights him in the Aquitaine's stairwell and successfully defeats him, but Korsakoff gets up and continues. The team believe that there's nothing they can do, but Strikeseeker goes out into the desert to confront Korsakoff. After a heated argument in the burning New Mexico sun outside the fortress, Korsakoff forces Strikeseeker to shoot him in the head, killing him. After Francois leaves the Aquitaine, the three remaining Stormwatchers (Captain Ares, Eagle Eye and Strikeseeker) plan to return to New York and continue fighting crime underground.

Trivia

 * The name of the building, 'Aquitaine', derives from Lionheart's fascination with medieval tales. Aquitaine is a location in France, and was an important location during the wars of the 7th century AD.