If you want to experience Montreal then you must use he Métro (subway)... Trying to get off the train as everyone pushed their way in is a true Montreal experience...good luck :-)
Place Blanche is one of my favourite places in Paris. Perhaps because I stayed most of my three-plus weeks there (in the building almost to the far right in the photo); perhaps because it always seemed to be so active.
A to die for chocolate buffet at Hanoi's Metropole Hotel.
Cooking lesson in Hoi An includes market tour, boat ride, lesson, and a meal all for $18.
The best place to stay and SEE San Francisco is Inn Above Tide in Sausalito.