Lisson Gallery is one of the most influential and longest-running international contemporary art galleries in the world. Since being founded in 1967 by Nicholas Logsdail, it has championed the careers of artists who have transformed the way art was made and presented.
P Franco, wine shop, bar and restaurant. Amazing wine, delicious small plates (guest chefs) in a very lively atmosphere. The wait for a spot to sit down is worth it.
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.
I often stop when passing this artery of city traffic. The dwarfing structure casts shapes and shadows which can easily be missed when speeding in/out of the city.