Free things to do in London this week.

John Nash leads you around central London. Image: Discover Marble Arch

Spaghetti Map

Nope, it's not a list of London's best pasta eateries; the Spaghetti Map is in fact a free leaflet spotlighting six permanent art commissions on the London Underground network, and encouraging kids with creative prompts and space to write and draw, inspired by what they've seen. A fantastic free distraction for the summer hols. Find it at the following Tube stations: Arsenal, Battersea Power Station, Blackhorse Road, Edgware Road (Circle line), Manor House, Nine Elms, South Kensington, St. James's Park, Tottenham Court Road, Westminster and Whitechapel.

Throughout the summer.