The bus was old and in disrepair. We spent the majority of the tour in the lower level of the double decker bus where it's impossible to see anything. The windows had some sort of coating on them making them opaque rather than transparent - and most of the stuff talked about was to high to be seen from the lower level. The idea is that as people leave the upper section the people from the lower section get dibs on the seats, of course there wasn't any staff at most of the stops (which BTW are not marked in any way) to enforce this. And it's expensive. Save your money pick a few places you want to see and use public transportation.