Vieques in full Isla de Vieques, is an island-municipality of Puerto Rico in the northeastern Caribbean, part of an island grouping sometimes known as the Spanish Virgin Islands. Although Puerto Rico is a U.S. Commonwealth, Vieques, like the rest of Puerto Rico, retains strong Spanish influences from 400 years of Spanish ownership. Vieques lies about 8 miles (13 km) to the east of the Puerto Rican mainland, and measures approximately 21 miles (34 km) long by 4 miles (6 km) wide. The two main towns of Vieques are Isabel Segunda (sometimes written "Isabel II"), the administrative center located on the northern side of the island, and Esperanza, located on the southern side. At peak, the population of Vieques is around 10,000. The island's name is a Spanish spelling of a Native American word said to mean "small island". It also has the nickname "Isla Nena", usually translated from the Spanish as "Little Girl Island", as a reference to its being perceived as Puerto Rico's little sister island.

Isla Culebra is an island-municipality of Puerto Rico originally called Isla Pasaje and Isla de San Ildefonso. It is located approximately 17 miles (27 km) east of the Puerto Rican mainland, 12 miles (19 km) west of St. Thomas and 9 miles (14 km) north of Vieques. Culebra is spread over 5 wards and Culebra (Dewey) Pueblo (The downtown area and the administrative center of the city). The island is also known as Isla Chiquita ("Little Island") and Última Virgen ("Last Virgin", reflecting it’s position at the end of the Virgin islands archipelago). Residents of the island are known as Culebrenses.

Saint Croix is an island in the Caribbean Sea, and a county and constituent district of the United States Virgin Islands (USVI), an unincorporated territory of the United States. It is the largest of the U.S. Virgin Islands, being 28 by 7 miles (45 by 11 km). However, the territory's capital, Charlotte Amalie, is located on Saint Thomas. The terrain is rugged, though not extremely so. The highest point on the island, Mount Eagle, is 1,165 feet (355 m) high. Most of the east end is quite hilly and steep, as is the north side from Christiansted west. From the north side hills fairly even plain slopes down to the south coast: this was the prime sugar land on the island.