Singapore: tropical Asia’s thrumming megalopolis. 665 square kilometres of hustle, bustle, concrete and air-con. But nestled among the concrete is an urban wilderness – places where crocodiles, monkeys, otters, snakes and hornbills sit right among the skyscrapers and boardwalks. By the end of the show, viewers will have an eye-opening experience and a deeper appreciation for the amazing life forms that live right next door.

• David Attenborough