Buenavista is located at the northern tip of Guimaras Island, and is one of the five towns comprising the province of Guimaras. The northern and northwest part of the town overlooks Panay Island and the northeast portion faces Negros Island. Iloilo Strait lies between the town and Panay, and Guimaras Strait lies between the town and Negros. The McArthur wharf serves as the municipal wharf for Buenavista and part of San Lorenzo is used by passengers from the neighboring Panay Island in going to Negros Province and vice versa. This transportation route serves as a cheaper link, rather than taking a ship.
Buenavista's terrain ranges from plains (nearly level in the central and northwest coastal areas) to mountains (northwestern part). The climate is mild and cool, due to its being bounded by the sea on the three directions.
Buenavista is the oldest municipality on Guimaras. It was established in 1775, during the Spanish colonial period. A Spanish governor general was reputedly impressed by the scenery of the location, and called the place Buenavista, Spanish for "beautiful view".
Santo Rosario was formerly known as Baybay, while Salvacion's old name was Ambulong.
Buenavista is the center of higher education. In fact, the main campus of Guimaras State College, only state college in Guimaras, is found in Brgy. Mclain. Furthermore, the municipality has 19 public elementary schools, 5 public high schools, and 1 vocational technical school. It has a literacy rate of 98.4%, the highest in the whole of Guimaras.