alcove, arbor, arboretum, belvedere, bower, cloche, cold frame, conservatory, coolhouse, forcing bed, forcing house, forcing pit, gazebo, glasshouse, green court, hotbed, hothouse, kiosk, lathhouse, nursery, orangery, pavilion, pergola, pinery, pleasure-garden, pleasure-grove, retreat, seedbed, summerhouse, vinery, viridarium