Explore Secret Stories Hampstead: Martians & Poets Tour , a self-guided interactive walking tour to enjoy whenever you want. This audio tour is part of an Ordnance Survey series of bite-sized, tongue-in-cheek stories. Expect nutty nature, smelly smugglers, raucous royals you get the idea. Hampstead was a petri dish where scientific and medical ideas flourished. See the home of the Father of Science Fiction, get to know the explorer who built the UK\'s first family planning clinic, and check out the fountain of healing water. Find out what happened when poetry and apothecary came together and learn more about the Freud family. Total length: 1.54 miles; Suggested age range: 11+ Purchase this Tour (and more) in the Secret Stories App, available for free download from Android Play and Apple App store. You\'ll find more details of the tour and what it contains in the app!