On skinny Estero Island, the Mound House is one of the oldest standing structures in Lee County. Built by the Gilbert family, members of the Koreshan sect, in 1889, it sits atop a Calusa mound (hence the name) abutting a pretty mangrove forest. This humble dwelling is a veritable catalogue of local architectural styles, and a former in-ground pool on the property has been converted into an underground exhibit showcasing the layers and strata of shells in the mound. It serves as a major archaeological center, with frequent educational programs and tours.
