The annex building tour is available for an extra charge of $4.00 and is limited to 15 people at atime and runs maybe 3-4 times per day. I lucked out, there was only 5 on the tour I took. It is WELL worth the extra $. Sadly it lasts only 1 hour but there are some really neat aircraft in there. I asked if they ever thought about opening up the doors and moving a few aircraft outside for a "photo" day and was told there was no plan for this at this this. The only time you might see an aircraft outside is if they are moving aircraft back and forth between the two buildings.
A world class museum and I would say is a must see for any aviation loving Canadian who might find themself in the Ottawa area. Lots of interactive stuff including three large flight sim stations, lots of one of a kind aircraft and a pretty descent store selling lots of aviation gear.
Jeff
