Marco Island, Florida in the context of "Collier County, Florida"

The Calusa (/kəˈluːsə/ kə-LOO-sə, Calusa: *ka(ra)luś(i)) were a Native American people of Florida's southwest coast. Calusa society developed from that of archaic peoples of the Everglades region. Previous Indigenous cultures had lived in the area for thousands of years.

At the time of European contact in the 16th and 17th centuries, the historic Calusa were the people of the Caloosahatchee culture. They developed a complex culture based on estuarine fisheries rather than agriculture. Their principal city of Calos was probably at Mound Key, and their territory reached at least from Charlotte Harbor to Marco Island. Hernando de Escalante Fontaneda, a Spaniard who was held captive by Florida Indians from 1545 until 1566, described the Calusa realm as extending from Tanpa, at the mouth of Charlotte Harbor, down the coast to Muspa, at the southern end of Marco Island, and inland to Guacata on Lake Mayaimi (Lake Okeechobee). They had the highest population density of South Florida; estimates of total population at the time of European contact range from 10,000 to several times that, but these are speculative.

The Caloosahatchee culture is an archaeological culture on the Gulf coast of Southwest Florida.

The Caloosahatchee culture region lasted from 500 BCE to 1750, and has been divided into five periods based on ceramic styles. Its territory consisted of the coast from what is now southern Sarasota County through all of Charlotte and Lee counties to the northern edge of Collier County, approximately 40 kilometres (25 mi) north of Marco Island, and about 90 kilometres (56 mi) inland from the coast. The area from Charlotte Harbor to the Ten Thousand Islands has been informally called the Calusa region. At the time of first European contact, the Caloosahatchee culture region formed the core of the Calusa domain.

East Naples is an unincorporated community and the county seat of Collier County, Florida, United States. East Naples has been the county seat since 1962, when the Collier County Courthouse was moved from Everglades (see Old Collier County Courthouse).

East Naples is part of the Naples–Marco Island Metropolitan Statistical Area.

Hurricane Irma was an extremely powerful and devastating tropical cyclone that caused extensive damage and loss of life across the Antilles and Eastern United States in September 2017. Irma was the first Category 5 hurricane to strike the Leeward Islands on record, though it was followed by Hurricane Maria, which struck the region at Category 5 intensity as well two weeks later. At the time, Irma was considered the most powerful hurricane on record in the open Atlantic region, outside of the Caribbean Sea and Gulf of Mexico, until it was surpassed by Hurricane Dorian two years later. It was also the third-strongest Atlantic hurricane at landfall ever recorded, just behind the 1935 Labor Day hurricane, Hurricane Melissa, and Dorian.

The ninth named storm, fourth hurricane, second major hurricane, and first Category 5 hurricane of the extremely active 2017 Atlantic hurricane season, Irma developed from a tropical wave near the Cape Verde Islands on August 30. Favorable conditions allowed Irma to rapidly intensify into a Category 3 hurricane on the Saffir–Simpson wind scale by late on August 31. The storm's intensity fluctuated between Categories 2 and 3 for the next several days, due to a series of eyewall replacement cycles. On September 4, Irma resumed intensifying, becoming a Category 5 hurricane by early on the next day. Early on September 6, Irma peaked with 1-minute sustained winds of 180 mph (290 km/h) and a minimum pressure of 914 hPa (27.0 inHg). Irma was the second-most intense tropical cyclone worldwide in 2017 in terms of barometric pressure, and the strongest worldwide in 2017 in terms of wind speed. Another eyewall replacement cycle caused Irma to weaken back to a Category 4 hurricane, but the storm re-attained Category 5 status before making landfall in Cuba. Although Irma briefly weakened to a Category 2 storm while making landfall on Cuba, the system re-intensified to Category 4 status as it crossed the warm waters of the Straits of Florida, before making landfall on Cudjoe Key on September 10. Irma then weakened to Category 3 status, prior to another landfall in Florida on Marco Island later that day. The system degraded into a remnant low over Alabama and ultimately dissipated on September 13 over Missouri.

Horr's Island is a significant Archaic period archaeological site located on an island in Southwest Florida formerly known as Horr's Island. Horr's Island (now called Key Marco, not to be confused with the archaeological site Key Marco) is on the south side of Marco Island in Collier County, Florida. The site includes four mounds and a shell ring. It has one of the oldest known mound burials in the eastern United States, dating to about 3400 radiocarbon years Before Present (BP). One of the mounds has been dated to as early as 6700 BP. It was the largest known community in the southeastern United States to have been permanently occupied during the Archaic period (8000 BCE-1000 BCE).

The island is named for Capt. John Foley Horr, who raised pineapples on the island in the late 19th century. The Capt. John Foley Horr House was listed on the U.S. National Register of Historic Places on October 8, 1997. In the late 1980s, a development company planned to build a bridge to Horr's Island and develop it. In response to state law requiring an archaeological assessment of the island before it could be developed, the development company funded a research project. The research team carried out excavations for three months.