The capital's largest showcase of architecture and design, Open House, is arriving this weekend, offering FREE entry to some of London's most beautiful and fascinating buildings.

The 24th annual architecture event is taking place on Saturday (September 17) and Sunday (September 18), and features 750 gorgeous buildings in London.

The Open House event invites everyone to experience, explore and understand well-designed architecture, with free tours around the featured spots.

Within the programme are 750 buildings, including 140 new for this year.

The event's buildings are organised into several categories, including; Stirling Prize winners, health, education, the housing crisis, faith, hidden gems, classic modernism, arts, government, heritage and more. Included is everything from world-famous landmarks like The Shard to historical buildings, to hospitals.

Open House director, Rory Olcayto, said: "From a Battle of Britain Bunker to the Argentine Ambassador's residence, Open House weekend gives Londoners the chance to explore the city's great buildings and places that are usually off-limits.

"Whether its super-contemporary private homes, iconic skyscrapers or hidden gems like the Crystal Palace subway, very little is off-limits during the two days."

Find out which of London's famous buildings are offering free entry for Open House weekend

Open House Highlights in west London

Brent

  • Baps Shri Swaminarayan Madir
  • Brent Civic Centre

Ealing

  • Pitshanger Manor

Hammersmith and Fulham

  • Maggie's Centre
  • Tin House
  • Roca London Gallery
  • Television Centre

Harrow

  • Zoroastrian Centre for Europe in Harrow
  • Harrow School

Hillingdon

  • Eastcote House Gardens
  • The Great Barn Harmondsworth
  • Battle of Britain Bunker

Kensington and Chelsea

  • Silchester Estate
  • Hidden House
  • Trellick Tower
  • Kensington Roof Gardens
  • Royal Hospital Chelsea

Westminster

  • Zig Zag building
  • Serpentine Pavilion and Summer Houses
  • Royal Institute of British Architects
  • 10 Downing Centre
  • Foreign and Commonwealth Office
  • Portcullis House
  • Westminster Hall
  • Royal Albert Hall

For more information or for a full list of featured buildings, visit the Open House London website.