Roughly a third of it lies within the Peak District, most of the city is green space, and it is built across hillsides where five rivers meet.
That boundary produces a real category of business: outdoor instruction and guiding, climbing and cycling, places to stay and cafés out on the moors. Their customers are standing outdoors on a weak signal when they open the website, so every unnecessary delay is a booking that does not happen. On a Valacia website your hours and your number are words on the page, there the moment it arrives.
A guest house or a café out on the moors has a set-up made for it: Valacia For Hotels puts every room on a page of its own, and Valacia For Restaurants carries the menu and the day's hours for walkers checking before they set off.