Provide the theme summaries for the following conversation: 

#Person1#: Oh, hi Pam. When did you get back from Canada? How was it?
#Person2#: The day before yesterday. I only visited Montreal and Ottawa, but I had a great time.
#Person1#: Which city did you like better?
#Person2#: That's hard to say. . . I think Ottawa is prettier. It has better sightseeing, too. A lot of museums and galleries.
#Person1#: And what's Montreal like? What did you think of it?
#Person2#: Montreal is more exciting. It has better shopping. The stores are cheaper and more interesting.
#Person1#: Which one has better nightlife?
#Person2#: Oh, Montreal of sure. It has more restaurants and clubs. They say Montreal is the most exciting city in Canada.
#Person1#: Well, I've always wanted to see Vancouver. I've heard it has the most beautiful views.

Summary: 
Pam came back from Canada the day before yesterday. He thinks that Ottawa is prettier and Montreal is more exciting with better nightlife.