My wife and I toured Portland on the Gray Line hop on/hop off bus tour. Lydia was our driver and guide, and was absolutely incredible! She not only provided in depth information in every area we drove through, but she also used the bus's speaker system to greet children on their way home from school (talk about a brand ambassador!), and brought smiles to our faces, as well as to the kids!
The tour encompassed much of Portland, including the zoo, Rose garden, Japanese garden, and several other districts. I highly recommend this tour!
And Lydia? She deserves a raise! She's a fantastic guide!