We really enjoyed the tour route and learning about the architecture from an elevated train viewpoint. Our tour guide "Delta" was just the cutest and very knowledgeable. The 2 hours of walking and sitting on the trains go very fast. We were also lucky, that we had great weather.
WARNING: If you take this tour in the dead of winter or early spring, make sure you layer up "base" tights ( like ski wear) to keep you warm.
Overall, an EXCELLENT TOUR! I highly recommend. Great job Delta!!