The worst Hop on and hop off bus I have Ever been on! The double decker bus was "full" on the TOP after the first stop ( we got on at the 2nd stop) so the three of us sat downstairs inside. The windows were closed and had screens on the outside which made it impossible to see anything. The driver had an open window which allowed bus fumes to come through the bus giving us headaches! Our "guide" was talking in French and when speaking in English his accent was so French that we had difficulty understanding him. The fee for this awful trip was $ 55.00 and certainly not worth it!