Fort Condor
Fort Condor is a solitary reactor situated in the middle of a rocky field overlooking a cliff. You can find it in the southeast section of the eastern continent just southeast of Junon.

Fort Condor is the location for an optional side quest that you can partake in. You can find additional details about the side quest in the Fort Condor guide of the Side Quests section. However, there is a part of the game where you must participate in the mini-game that takes place here. Check out the Fort Condor Walkthrough page for more details.

This story section comes after Cid and his team retrieve the Huge Materia from Mount Corel and right before the whole team heads back to Mideel to rescue Cloud and Tifa.
There are items available for purchase in this location. These items change after Meteor appears and after you rescue Tifa from Junon during the second visit.
The map below shows the location of the Fort Condor on the world map:
