Dover’s only his­to­ry, sci­ence and art muse­um offers inter­est­ing insect and geo­log­i­cal spec­i­mens as well as local his­toric mem­o­ra­bil­ia. Three build­ings open for tours includ­ing a 1675 colo­nial gar­ri­son house with arti­facts. Reser­va­tions request­ed for groups.