It's also incredibly different in the US in weird ways.
Amsterdam is a place where you can go into any coffee shop and smoke there on premises. If you don't need to buy more, many will let you smoke and use their toilets if you buy a beer, coffee or snacks.
Smoking tobacco is a part of European culture and I was surprised to see smoking allowed indoors in many places, both in the west and east (several states in Germany seemed to allow it, or at least not enforce bans; same in Croatia, Montenegro, etc.) In the Pacific North West US, tobacco smoking bans are stricter than anywhere else I've seen in the US. Few bars even have outdoor smoking areas. I have never seen smoking areas outside pot stores (I think it's illegal).
This actually makes for a vastly different culture. Also in the Pacific Northwest, very few pot stores will take a foreign drivers license, even for alcohol! (In other parts of the US, people don't normally card adults -- it's really weird), so you're not going to see the same type of marijuana tourism seen in The Netherlands.
I'm curious what the culture is like in other places that have approved recreational cannabis. Anyone from Colorado or Maine want to chime in?