LIFE ON TITAN
Syd's Workshop is in the Downtown Crater near the entrance to the Gamma Tunnel and the Debriefing Zone. The easiest way to find it is to enter Downtown and fly to the Gamma Tunnel's entrance. Bear right and fly past Breaker Maker 2. Keep the crater wall to your left. Behind Breaker Maker 2 you'll find a small complex. Syd's Complex is toward the rear of this complex from this approach. The hangar door will be facing you.
I don't want to give away the plotline in this section so I won't tell you what Syd's got hidden in his workshop.
Lazarus Hightower is in the Downtown Crater near the entrance to the Gamma Tunnel close to the crater wall. You can target it from a message offereing to translate some alien "gibberish" messages. You can also enter Downtown from Gamma, make a sharp right and follow the crater wall until you see the narrow column that the Laz Hightower rests on.
The hangar door faces the crater wall and is right at stall level. This makes The Lazarus Hightower tricky to get into. A Cell #3 or better helps by adding a few feet to your stall level.
The Lazarus Family keep crazy old Uncle Xavier in the Hightower. He can keep up with everything going on in Titan from up there. He'll decode the mysterious messages for you if you visit him.
Klamp-G Secret Base
The Klamp-G Secret Base is located in the far West edge of the Riverside Crater. The easiest way to find it is to enter Riverside and follow the crater wall around to the West. The base is a cone-shaped building surrounded by some small, unnamed buildings very near the crater wall. This is where Klamp-G store their Unknown Origin.
Lazarus Secret Base
The Lazarus Secret Base is located in the Resevoir Crater at the back of the island that the Light Well is on. Just target the Light Well from your Local Services Menu, go toward the Light Well, and follow the island around to the back where you'll see a square alcove at water level. The door to the secret base is inside the alcove.
Prison Oubliette is where Klamp-G enemies go to "disappear". It is located at the far rear (East) of the Mines Crater between the Lazarus and Klamp-G mines. You can find it by following the Mines Crater wall around to the back of the crater. It is very near the crater wall with the hangar door facing the crater wall.
You can also target it from a message when you need to go there. It's almost a straight shot from the Midway/Mines tunnel. Just enter the Mines from Midway and keep flying straight back and you'll run right into Prison Oubliette.