The Canadian High Commission occupies a newly-renovated grand building overlooking Trafalgar Square, and is not generally open to the public to wander in.
But during June and July, they will be holding public tours on selected Friday afternoons, and they are free to attend.
Registration has to be in advance, for the usual diplomatic security reasons.
In addition to seeing the inside of the building, it has recently been fitted out with a range of modern Canadian artworks.
You can book tours here.
The building’s Canada Gallery though is open to the public daily from 11an to 5:45pm via the Pall Mall entrance. Admission is free.