- Geoff Marshall explores what London would be like without the tube.
- Was the OXO tower really an OXO factory?
- Learn about the lost castles of London.
Things to do today:
THAMES ART INSTALLATION: See Ik-Joong Kang's Floating Dreams in the middle of the Thames next to Millennium Bridge. Composed of 500 illuminated drawings, the artwork remembers the millions of Koreans displaced during the 1950-53 Korean War. The installation is part of Totally Thames festival, which takes place throughout September. Free, just turn up, until 30 September
BJÖRK EXHIBITION: Somerset House has a virtual reality exhibition about all things Björk. The collection of digital and video works feature some of Icelandic icon Björk's most exciting collaborations as well as her MoMa-commissioned immersive film, Black Lake. £15, book in advance, until 23 October
FIRE OF LONDON: Browse through potions, silver, rare books and other items which survived the Great Fire of London at this Royal College of Physicians exhibition marking the 350th anniversary. Learn some of the gruesome methods used to treat burns at the time of the fire. Free, just turn up, until 16 December
HARRY POTTER: Take part in an interactive colouring event to celebrate the first day of term at Hogwarts. Takes place at King's Cross station — note that the event will be filmed. Free, just turn up, from 7am
WESTMINSTER ART: It's the last chance to catch The Ethics of Dust, the 50m-long cast of the wall of the Palace of Westminster. The artwork by Jorge Otero-Pailos encompasses hundreds of years of history. Free, book in advance, from 9am
DRAWING CLASS: Test your artistic skills at in a drawing class at Selfridges, under the guidance of artists from the Royal Drawing School. All materials provided. Free, just turn up, 5pm
SCIENCE TALK: Find out how bacteria affects human health at the Royal Institution, and how it has shaped evolution, with science writer Ed Yong and chair Adam Rutherford. £14, book in advance, 7pm-8.30pm
80S DISCO FILM: The Last Days of Disco featuring Chloë Sevigny and Kate Beckinsale is tonight's film offering at The Water Poet in Spitalfields. Grab a drink and discuss the film after the screening. Pay-what-you can, just turn up, 7.30pm
COMEDY SHOW: Sunil Patel, Jimmy Bird and Nico Yearwood are performing at Dogstar in Brixton. After the show, stay until 2am for a dance. Free, just turn up, 8pm
Good cause of the day
PUB QUIZ: Grab your cleverest friends and head to The Elgin in Ladbroke Grove for a pub quiz in aid of Cancer Research. £15, book in advance, 7pm
Our daily pick of Funzing events
CAMEROONIAN SUPPER CLUB: Sample the spicy street food of Cameroon, a country with over 300 ethnic groups at this supper club. Expect beignets, brochettes and barbecued fish. £28, 10/16/17 September
LEATHER SANDALS WORKSHOP: Create your own bespoke leather sandals, tailored to your feet and style at this workshop. £80, 11 September/16 October