- Fun, frolics and fireworks at The Mayor's Thames Festival on Saturday and Sunday (free).
- Go and watch the Paralympics at an open air big screen but check in advance to see if they're showing the closing ceremony on Sunday.
- Lots to see and do at Unlimited Festival, including performance/installation Private Dancer, outdoor circus in The Garden, Ménage à Trois and the Ian Drury musical Reasons to be Cheerful.
- The Hampstead and Highgate Literary Festival is at Ivy House (go Pavlova spotting while you're there).
- Watch films under the Westway with Portobello Film Festival (free).
- Albany Outdoors offers a weekend of performances and live music in the squares and streets of Deptford (free).
- It's the final weekend of the Watch This Space festival outside the National Theatre. The Burnt Out Punks fire things up each night, plus Miss Behave, the Lords of Strut, Hoop La La, nabakov and Mannekino entertaining throughout the afternoon in Theatre Square (free).
- Hackney Film Festival showcases homegrown film making talent.
- Explore E17 with their art trail, guiding you round exhibitions, events and opportunities to get artistic yourself (free).
- The Place Prize previews begin (tickets £12).
- There are still tickets available for A Musical Journey through Ovid and Titian, discussion and music at the National Gallery from 7-8.15pm (£10/£7).
- Last chance to see the London 2012 Olympic and Paralympic Games medals up close this weekend at the British Museum, which is open till 8.30pm tonight (free).
- The Exploding Head Film Club presents The New York Nightmares of Larry Cohen, a double bill at the Roxy Bar and Screen as part of Scala Beyond from 7.30pm (tickets £4).
- It's Showtime Saturday at Molten Festival, with an electrifying finish in Barking Town Square (free).
- The Poetry Book Fair presents publishers and readings at Candid Arts Trust, Islington from 10.30am-5pm (free).
- Bounds Green has a new market - it launched last weekend as a monthly thing but was so successful it's going weekly at Bounds Green School, near the tube.
- PupAid festival includes the Scrufts dog show and agility tests on Primrose Hill from 11am-5pm (free).
- Interested in the smells of the 1960s and 70s? Join a vintage scent session at Les Senteurs Scent Salon from 2.30-5pm (tickets £35).
- Damon Albarn's Africa Express concert takes place in Granary Square, Kings Cross from 6pm (tickets £20).
- Watch the Paralympic Marathon on the streets of London from 8am (free).
- Get an Art Deco train with London Transport Museum and spend the day at Amersham Heritage Open Day between 12-5pm.
- Admire classic and vintage vehicles at Capel Manor Gardens, Enfield from 10am-5pm (adults £5.50 standard entry to show and 30 acres of gardens).
- Do the Brixton Mural Walk - meet at Stockwell tube at 11am (free).
- Sydenham Hill Wood celebrates 30 years as a nature reserve with an open day including free walks, tombola, face painting and cakes from 12-4.30pm (free).
- Take a free curatorial tour of closing exhibition The Inspiration of Decadence: Dodo Rediscovered at Ben Uri Gallery, Boundary Road, NW8 at 4pm (free).
- St John's Hill Festival in Battersea features a street market, stilt walkers, morris men, street dancers, a bouncy castle and a beer festival at the Beehive pub between 11am-5pm (free).
- Show your local bandstand some love by supporting the Bandstand Marathon — including Klezmer in Regents Park — from 1-5pm (free).
- The Paralympic Closing Ceremony 'Festival of Flame' telly broadcast begins at 7pm on Channel 4.
Other good stuff:
- What's on at Museums and Galleries
- Our latest theatre reviews and art reviews
- Books and spoken word events
- Your week in geek
- Things to do for a fiver or less
- Our pick of September's gigs
- Our pick of comedy gigs plus a guide to watching live comedy in London
- Free things to do in London
London Wonderground photo by Pallab Seth via the Londonist Flickrpool.