This is the revamped CTN (Crystal Transit Network). It's a happy medley of technology and mysticism. The computers and wiring inside the walls creates several types of energy waves, which are amplified by the crystals. Each crystal has a microchip with specific coordinates embedded inside it, allowing the physical displacement (aka. teleportation) of individuals and groups.
The second screenshot is the revamped sewers. It was pointed out to me that the sewers were kind of bare and basic when compared to the rest of the mapping. So, using a few tidbits from the steampunk tileset, I've redone the general look! The puzzle (not much of one, I know) is still the same.