Built by the Princes of Talmont in the 15th century, the château was seized by the Protestant leader, Soubise, in 1622, who had fortifications built. First a garrison under Louis XIII, then bombed in 1796 by the Anglo-Dutch, seized by the government in 1835, and finally restored between 1986 and 1994, the château currently houses the Sea Museum.

An 18th century château inspired by Le Petit Trianon at Versailles. It was built by Luc Pezot, a tallage collector and shipowner from Les Sables, based on the plans of the architect, Gabriel. It takes its name from the two menhirs erected nearby.