Highly recommended: Joel Kimmel's blog.
Visually speaking, this is one of the most beautiful blogs you'll ever visit. Kimmel is an Ottawa-based illustrator. His blog is full of sketches from around Ottawa, like this one of the graffiti wall at Bronson & Slater. Or this one of Ottawa's old train station. Or these drawings of buildings on Metcalfe Street. Lots more ... just look around.
Related: Ottawa Blogs Guide