The Doors Open schedule for 2011 is now on the website. The festivities beging April 30th in Guelph. Start planning your routes now.
Several locations also have twitter accounts to help plan your trips:
Doors Open London - @doorsopenlondon
Doors Open Toronto - @Doors_OpenTO
Doors Open Grimsby- @dooropengrimsby
What places were your favourites last year and where do you plan on heading this year?