The remarkable Centre for Wildlife Gardening in a back street in Peckham gives practical advice to city gardeners and has a nature trail for kids. Includes minibeast village, summer meadow, woodland copse, stag beetle sanctuary, wildlife pond and bog garden and a flowery chalk bank.
The remarkable stag beetle loggery at Kew Gardens. This giant beetle model is an educational exhibit with the added aim of providing a home for saproxylic insects (those which feed on decaying wood), and in particular to provide a safe haven for stag beetles which are globally endangered. It is found in the conservation area of Kew Gardens around Queen Charlotte’s cottage, kept wild. London is a stronghold for stag beetles.
Photo by David Hawgood [CC BY-SA 2.0 (http://creativecommons.org/licenses/by-sa/2.0)], via Wikimedia Commons