Maybe an obvious choice, but the Barbican is always good. My favourite space in there is the curve gallery, last time I went was for Cory Arcangel's 'Beat the Champ'. I love the architecture, although not many people do. I think it was voted 'London's ugliest building' in 2003.

Great coffee, amazing food, wonderful staff... the perfect experience!

Long standing late night cafe  

The Thai food scene in London is in an incredible place right now, with the likes of The Smoking Goat, Som Saa, The Begging Bowl and Farang all offering an experimental and delicious take on the cuisine. I'm focusing on the later a) because it's my local and b) because it's helmed by Seb Holmes, who's also cheffed at those others mentioned, and has managed to bring the best of all of them to Farang. Oh and c) the Gai Prik is probably the tastiest dish in London

A charming garden centre with cafe and restaurant, both located in beautiful greenhouses. Well worth a visit at any time of the year.