Make a beeline; the capital's favourite annual architecture open-doors celebration is back. London Open House 2015 launches this weekend and it promises to be as exciting as ever. 

Many of the city's much loved buildings are still on the list - cue the Maggie's Centre, Trellick Tower and the Siobhan Davies Studios - but there's also over 160 brand new buildings added this year to the Open House roaster. 

Newcomers such as the RIBA award winners The Foundry in Vauxhall by Architecture00 and Duggan Morris' Ortus learning centre, as well as the BT Tower (which is about to celebrate its 50th birthday) will certainly be popular destinations for the capital's discerning architecture tourist. However a wealth of houses and housing complexes of all scales and types are a definite highlight of 2015, ready to offer inspiration: from back yard extensions to housing for the over-60s and boutique developments, this year's line up has it all. 

At the same time, an ambitious ongoing project, the Peckham Coal Line - a proposal to create an elevated urban park using the old coal sidings to link Queens Road Peckham with Rye Lane with the potential to become London's own High Line - is also here to highlight the capital's exciting future. During the weekend there will be guided walks of the route and several events linked to the project. 

Here, we highlight some of the best projects to visit this weekend.