The document summarizes the four main geographical regions of Ecuador: 1) The Andes Highlands in the center divide the country into three continental regions - the Costal Lowlands to the west, the Amazon Rainforest to the east, and the Andes Highlands in between. 2) Additionally, Ecuador has an Insular Region which includes the Galapagos Islands located approximately 1,000 km west of mainland Ecuador. 3) Each region has distinct climates, landscapes, and ecosystems.