ctOS Towers (TL)

#1: The tower is located on a roof behind the building where the marker is. Enter the alley beside it, ride the forklift then continue until you reach the gate. There are two gates you need to unlock. The first one is located under the billboard so hack the camera near the first gate to see it. The second gate can be unlocked by another switch or by simply blowing up the nearby objects. Either way, after breaking through the second gate, climb up to find the tower.

#2: This tower has only one gate so you can use the camera near the tower to see and unlock the console. Next, find some wooden pallets in the alley that you can climb on then follow the walkway leading to the roofs, then finally to the gate. See the video below.

#3: Enter the alley in the back of the building and look for a camera across the tower. You need to unlock two gates so after finding the camera in the higher floor, use it to unlock the first console, then switch to the lower one behind the first gate so you can unlock it as well. Refer to the video below.