Plus tube station tours, and other landmark buildings.
It's basically Christmas for London lovers.
The top five.
Architecture festival is going ahead, with some changes.
Did you get to any of these venues?
This lot really got our geek juices flowing.
See inside the Old Bailey, Abbey Mills, 55 Broadway and more.
Poplar landmark joins Open House programme.
Some of the best shots from this year's event.
Run in a zoo for charity, ogle photos of outer space.
Get booking.
Talks, workshops, parties and open house tours make up this year's festival.
Behind the scenes of London buildings.
Annual festival lets you poke around London's buildings.
New art project opens cab shacks.
Full programme of 800 buildings revealed today.
Open House at the Teddington science centre.
Roundup of highlights without queues.
Christmas comes early for urbanites.
750 buildings for you to explore this weekend.
No date yet for re-opening, but not everything's available to pre-book anyway.
Get in early for a chance to visit London's best buildings.
Seven tours to help you appreciate London's buildings.
Once-controversial structure becomes part of the establishment.
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