Venezuela, officially Republic of Venezuela, republic in South America, bordered on the north by the Caribbean Sea and Atlantic Ocean, on the east by Guyana, on the south by Brazil, and on the south-west and west by Colombia. The coastline of Venezuela is about 2,735 km (1,700 mi) long and has numerous indentations, of which the gulfs of Venezuela and Paria are famous. The coast is generally narrow and steep, except in the west, which has expanses of low and occasionally marshy land. Of the around 70 islands off the coast that belong to Venezuela, Margarita is the largest and most valuable. The total area of Venezuela is 912,050 sq km (352,144 sq mi). The capital and largest city is Caracas.