Regent's Park
From £78
While Frieze London sells work made mostly after 2000, this sister fair features galleries from around the globe selling seriously high-end art from the ancient era to the end of the twentieth century. Basically, this is the place to be for major names in art, from Rembrandt to Picasso. There is also a talks program, with a nice historical edge. It's like the main Frieze fair, but in a fancy suit.