building derelict derelict building head quarters headquarters hospital industrial industrial building main office mental home office public works stone stone building urban building urban office water works windows works attached blue buildings climbing climbing-equipment detached exercise exercise-equipment exercising greenery man metal-rungs metal-work neighborhood neighbourhood park participant plants playground public public-park public-space recreation recreational roofing shade shadows shrubbery soft-blue-exercise-flooring sunlight sunshine trees user archive bestseller booklet books box copy cover dictionary encyclopedia essay knowing knowledge lecture letters library manual market pile publication read reading text textbook work writing angles appearances architectural architecture bench benches covered covering freestanding fun gazebo kiosk open park-pavilion pavilion relaxation roof rotunda rural rural-setting seating shelter top trellis-work clean cleaning Clearance clearing community contractors council-contractors drain drainage drainage-clearing drains equipment hoses maintenance pump pumping road roadside sanitation service street-scene suburb suburban suction truck urban vehicle workman workmen care cutter cutting danger grass grass-cutter grass-cutting groundsman landscaping lawn lawn-care lawn-mower lawn-mowing machine machinery mobile motor-mower motorised motorized power public-area rotary-mower sign signage warning advice animals art artistic breeds carnivores descriptions dog-owners dogs fonts guidelines health hygiene images instructions large large-dogs mammals messages muzzled muzzles open-air people pictures protection safety shapes Sizes texts variety warnings working-dogs appearance art-deco artwork bas-relief city cultural depictions design exterior external features frozen historic historical image industry old ornamentation perspectives quality sculpted sculpture shaped stone-work style surfaces wall-sculpture bridge colors colours curve curved curving direction ground light metal over parkland path paths peaceful perspective quiet rails relaxing reserve reserve-park strength strong textures track tracks tranquil view visitors wood wooden