Moving cities are a fairly hoary old sci-fi trope - I seem to recall they were always cropping up on Doctor Who when I was young, though I may be misremembering.
Philip ReeveFever jumped aside just in time to dodge the shower of urine, and stumbled into the path of a religious procession - celebrants in robes and pointed hats whirling and clapping and chanting the name of some old-world prophet, 'Hari, Hari! Hari Potter!'
Philip ReeveIs it...dead?" asked Tom, his voice all quivery with fright. "A town just ran over him," said Hester. "I shouldn't think he's very well.
Philip ReeveI was fascinated by The Lord of the Rings from about the age of eight and that lasted well into my teens.
Philip Reeve