Cozumel is an island in the Caribbean Sea off the eastern coast of Mexico's Yucatán Peninsula, opposite Playa del Carmen, and close to the Yucatán Channel. The island is covered with mangrove forest which has many endemic animal species. Cozumel is a flat island based on limestone, resulting in a karst topography. There are a number of visitors to the island's balnearios, scuba diving, and snorkeling. The main town on the island is San Miguel de Cozumel. The islands belongs to Cozumel Municipality of the state of Quintana Roo, Mexico.

Havana, officially Ciudad de La Habana, is the capital city, major port, and leading commercial centre of Cuba. The city is one of the 15 Cuban provinces. The city/province has 2.1 million inhabitants, the largest city in Cuba and the second largest in the Caribbean region, after Santo Domingo. The city extends mostly westward and southward from the bay, which is entered through a narrow inlet and which divides into three main harbours: Marimelena, Guanabacoa, and Atarés. The sluggish Almendares River traverses the city from south to north, entering the Straits of Florida a few miles west of the bay.

Key West is an island in the Straits of Florida on the North American continent at the southernmost tip of the Florida Keys. It is considered the southernmost city in the continental United States. The city also occupies nearby islands and portions of nearby islands. It’s popularly known for its stunning beaches, coral reefs – destinations for diving and snorkeling.

Miami is a major city located on the Atlantic coast in southeastern Florida and the county seat of Miami-Dade County, the most populous county in Florida and the eighth-most populous county in the United States with a population of 2,500,625. The 42nd largest city in the United States, with a population of 433,136, it is the principal, central, and most populous city of the South {Florida} metropolitan area, the most populous metropolis in the Southeastern United States. According to the US Census Bureau, Miami's metro area is the seventh most populous in the United States, with an estimated population of 5,547,051 in 2009. 

Great Stirrup Cay is a small island that is part of the Berry Islands in the Bahamas. Norwegian Cruise Line purchased the island from the Belcher Oil Company in 1977 and developed it into a private island for their cruise ship passengers. The northern part of the island has a sandy beach surrounded by rocks with snorkeling areas. The southern part features a helicopter airfield (with a sign reading "Great Stirrup Cay International Airport"), a large area without vegetation, and numerous concrete blocks. These are all remnants of a previous U.S. military installation and satellite tracking station. The island's lighthouse was originally constructed in 1863 by the Imperial Lighthouse Service. Great Stirrup Cay is adjacent to Little Stirrup Cay, Royal Caribbean Cruises' private island.