- Did you know there's a prison inside Big Ben?
- Go deeper than the tube.
- Croydon airport was the UK's first international airport.
Things to do today:
ALL DAY PARTY: Be inspired by the all-female line up at Goddess Fest 2016, celebrating females in the creative industries. There will be free music and spoken word at Shoreditch's Boxpark, before the party continues from 7pm at Cargo. Free (£10/£15), book in advance, from noon
RUGBY AND WW1: 90% of Rugby Union players fought in the first world war, and the World Rugby Museum is holding a tour around both the museum and Twickenham Stadium to commemorate these players and their stories. £20, book in advance, 1.30pm
DAVID BOWIE TOUR: Visit the place of Bowie's first London gig, the location where the picture for the Ziggy Stardust album cover was taken, and other Bowie-important places on a walking tour around Soho. £10, book in advance, 3pm
BAKING MASTERCLASS: Frances Quinn, the winner of the 2013 Great British Bake Off will demonstrate how to make a unique dessert and drink at a free masterclass at St Pancras Renaissance Hotel. Free, book in advance, 6pm
OUTDOOR CINEMA: Somerset House's outdoor film season has started, and tonight's film Walkabout tells the tale of a schoolgirl stranded in the Australian wilderness. A DJ will play prior to the screening. £16, book in advance, 6.30pm (film starts at 9pm)
CLOWNING AROUND: Watch Acrobuffos' first UK performance, in a show collaborated by air sculptor Daniel Wurtzel and director West Hyler. Take your kids to the show at the Southbank Centre and prepare to be amazed. £25, book in advance, 7pm
LITERATURE & MUSIC GIG: The Royal Institute of British Architects is holding a creative evening of live music, architecture, film and literature. There's a screening of The Magnetic North's new film, as well as readings from Amy Liptrot and John Grindrod. £15, book in advance, 7.30pm-11pm
FREE COMEDY: Known for her tales of marrying to stay in the conutry and finding her biological family, Radio 4's Deborah Francis-White tells more intimate stories from her life at The Phoenix Artist Club. Free, book in advance, 8.30pm
Good cause of the day
COLLECTING FOR CALAIS: Watch a screening of the documentary Fire at Sea at NT's in London Fields and bring items to donate to refugees in Calais. Free but physical donations encouraged, just turn up, 6pm (screening starts at 8pm)
Our daily pick of Funzing events
POKER MASTERCLASS: Whether you're a novice or an old pro at Texas Hold 'Em, you're sure to pick up a few tips from Peter, a man who had turned his passion into his income for the past 20 years. £20, 12 August
NATURAL BEAUTY PRODUCTS: Make your own organic beauty products so you can be sure what you're putting on your face is neither harmful to you nor the environment. £29, 14 August