London 2012: this week's best events in London, from Wimbledon to art and architecture festivals London Festival of Architecture London's standout buildings and design talents are the focus of the London Festival of Architecture, which this year pays tribute to the forthcoming Olympic Games with the theme The Playful City. During the festival's two-week run a series of roving hubs will be set up at boroughs throughout the city to engage with local residents, while a varied programme of one-off special events and ongoing exhibitions cater to architecture aficionados of all levels. Although the focus is on London the complementary International Architecture and Design Showcase goes a long way in expanding the festival's international scope. For three months from June 21, 50 international embassies and national cultural institutes across the capital will open their doors and display works by their most celebrated designers and architects. When: until July 8. The International Architecture and Design Showcase continues until September 23. Where: citywide How much: prices vary Masterpiece London Three years old this year, Masterpiece London has already grown to be one of the capital's leading art fairs. The focus here is on luxury goods so although all manner of objects are on display the prices are high - buyers here are often wealthy investors rather than casual visitors who've happened upon something beautiful. Vintage jewellery, historic automobiles and vast collections of art are all on show, with the social highlight likely to be the midsummer party in aid of CLIC Sargent on July 3. When: June 27 - July 4 Where: South Grounds, The Royal Hospital Chelsea, London SW3 4SR Tube: Sloane Square How much: from £20 London 2012 Festival, London and nationally The Olympics begin on July 27, but in advance of this massive sporting spectacle London and the country as a whole will be joining together to celebrate the London 2012 Festival. The culmination of the four-year Cultural Olympiad - the Olympic Games" cultural complement - the festival sees cultural organisations, landmarks and artists join together to host a series of ambitious events that showcase British creativity at its best. In London next month's BT River of Music festival sees a series of stages along the Thames host free concerts by artists such as the Scissor Sisters and the Noisettes - each different stage will represent a different continent so expect exceptionally diverse experiences and settings dependent on where you station yourself.There'll also be an expanded Proms programme that will see Wallace and Gromit make an appearance; a celebration of Shakespeare with Shakespeare: Staging the World at the British Museum and countless special events for communities in every part of the city. Keep up to date on what's happening when and where through our London 2012 Festival section. When: until September 9 Where: throughout London, and nationally How much: costs vary When: until July 27 Where: throughout the City How much: prices vary When: until June 30 Where: throughout Greenwich How much: prices vary Performing this year are Tim Minchin, Sean Hughes, Andi Osho, Patrick Monahan and many more.