Secret York an unusual guide

Where can you find a fully functioning windmill in the middle of a residential road? Or reach the very end of
the solar system? Where can you walk in the middle of a 15,000-year-old bog or swim in a pool once powered by
fruit pastilles? Discover Britain’s last remaining railway nursery, Bettys’ underground Dive Bar, the fastest rocket
to ever have flown in Earth’s atmosphere, the secret ceremony room of the Freemasons, and even York’s most
prestigious postbox.