definitely place worth a visit! read more at
http://www.hempyourself.company/#!Place-worth-a-visit-Hash-Marihuana-Cáñamo-Hemp-Museum-BARCELONA/c1ma6/55e307580cf269cc03e5e4bd
Cool atmosphere and interesting displays, the gallery (separate entrance) was cool. We got to try out a "volcanic" themed vaporizer as part of our visit.
The Barcelona museum is also well worth a visit. Although similar displays to those in Amsterdam there are some that look much better given the old building, itself part of the attraction.