United States

 The Intracoastal Waterway is a 3,000-mile inland waterway along the Atlantic and Gulf of Mexico coasts of the United States, running from Massachusetts southward along the Atlantic Seaboard and around the southern tip of Florida, then following the Gulf Coast to Brownsville, Texas.

 Key West, a U.S. island city, is part of the Florida Keys archipelago. It's also Florida's southernmost point, lying roughly 90 miles north of Cuba.  

 Puerto Rico is a Caribbean island and unincorporated U.S. territory with a landscape of mountains, waterfalls and the El Yunque tropical rainforest.