Ruslan, Baril, and Lou:
You walk(and float, of course) back towards the initial direction you had been moving. Once reaching the first intersection, you see that a good fourty or fifty feet to down the left street is a small object on the ground. Though it is hard to see from this distance, it could very easily be a sewer access. Could be.
Toryn, Pabsit, and Oskar:
You move in the opposite direction from the other group, and find that the street only goes forward for two blocks before turning to your right. Following the road down its new path, you walk two more empty, identical blocks before reaching another intersection. This one is a T-shaped junction, with a road going both left and right...however, directly in front of you is a building that looks nothing like the others that you have seen before.
It is small, probably only one level, with actual windows and an iron door. The windows have iron bars over them like a prison, and the roof is perfectly flat.