Rarely seen buildings and spaces in Greenwich and Lewisham are being opened to the public as part of a national project.

Open House London 2015 is an annual event opening up some of the capital’s most famous buildings to the public.

This year 800 buildings will be available to the public, with the likes of the Bank of England and No. 10 Downing Street on the map.

MORE TOP STORIES Closer to home a wealth of spaces around Greenwich and Lewisham are also opening their doors.

Running next Saturday and Sunday (September 18-19) some of the local highlights include Woolwich Town Hall, in Wellington Street, Blackheath House along Shooter’s Hill, Charlton House along Charlton Road – London’s only surviving Jacobean mansion.

Members of the public can also visit the information centre set in the iconic Thames Barrier, renowned for its architecture.

Victoria Thornton, founding director of Open-City said: “Open House is a unique and vibrant annual event, offering people across London the chance to explore and learn about the capitalʼs architecture.”

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The Thames Barrier. Courtesy of Open House

A special section entitled Thamesmead: Revitalising Neighbourhoods will feature this year, intended to showcase some of the highlights of the town ahead of crossrail’s arrival in Abbey Wood in 2018.

Peabody, a housing association, is opening three community buildings for the scheme; Sporting Club Thamesmead, The Link and Tump 53.

The Open House weekend will also be an opportunity for people to find out more about the regeneration plans for south Thamesmead at The Link.

Stephen Howlett, chief executive of Peabody said: “It is marvellous that our buildings in Thamesmead are once again showcasing themselves during Open House London.”

Many events are on a first come first served basis, but some you need to book so check beforehand.

For more information visit: www.openhouselondon.org.uk