Open House London

It's Open House London next weekend, which I am looking forward to. Any recommendations for places to see? Cheesegrater is obviously on my list, and I have tickets to 240 Blackfriars and CityPoint. What are you planning to see?

These are some of the places I have been to in the past:

2013:
Crystal Palace Subway
Canada Water Library
Carpenters' Hall
Chartered Accountants' Hall
One Canada Square
Citigroup Centre
Brunel Museum
Battersea Power Station
Peter Jones
Holy Trinity Church
Argentine Ambassador's Residence
Romanian Cultural Institute
Adaptable House

2012:
City Hall
Westminster City Hall
The Pumphouse, Pimlico District Heating Undertaking
Limehouse Town Hall
Limehouse Accumulator Tower
Skyroom and Architecture Foundation
Masonic Temple
St Ethelburga's Centre for Reconciliation and Peace
Custom House
Apothecaries' Hall
City of London School
One New Change

2011:
Lloyd's of London
BT Tower
Broadgate Tower + 201 Bishopsgate
30 Crown Place
Society for the Protection of Ancient Buildings
Spitalfields Charnel House
Sandycombe Lodge
The LuxPod
Institut français du Royaume-Uni
College of Psychic Studies
Balfron Tower
Chrisp Street Market Clocktower

2008:
Neasden Bunker
The Stables
Master Mariners
Foreign Office
Banqueting house? Admiralty house? My records are incomplete for the Saturday.
Babylon Roof Gardens
Shell Grotto
York House
Orleans Gallery
Garrick's Temple to Shakespeare

2007:
Vintner's Hall
30 St Mary Axe
Old Turkish Baths
Village Underground

2006:
BedZED
Gibbs Building
Neasden Bunker
The Stables
Blizard Building
Brunel Museum

2005:
Neasden Bunker
St Anne's Church

Photos on Flickr: Open House London.