Boothbay Harbor is a town in Lincoln County, Maine, United States.During summer months, the entire Boothbay Harbor region is a popular yachting and tourist destination. Renamed Boothbay in 1842, the harbor continued to develop as a fishing center. In bad weather, it could hold at a time between 400 and 500 vessels, often Friendship Sloops, seeking shelter. By 1881, it had a fishery and fish oil company, an ice company, two marine railways, a fertilizer manufacturer, and a factory for canning lobsters. On February 16, 1889, the community was set off from Boothbay and incorporated as the town of Boothbay Harbor. Some location filming for the 1956 movie version of Rodgers and Hammerstein's Carousel, notably the "June Is Bustin' Out All Over" sequence, was done there. Each summer, Boothbay Harbor draws crowds of tourists. Attractions include the state aquarium, art galleries, restaurants, boat tours to coastal islands and whale watching.