Lake Pleasant is a village in Montague, Massachusetts, United States, and the site of an early and prominent American Spiritualist campground. It claims to be the oldest continuously-existing Spiritualist community in the United States. Emma Hardinge Britten, one of the many invited speakers at Lake Pleasant, painted this portrait of the community in 1880: Today Lake Pleasant still shows strong traces of its origins, with a dense pattern of Victorian cottages on small camping lots. TNSA with its Thompson Temple continues as an active organization.