Fort Saint Louis was a French fort established in 1685 near present-day Matagorda Bay in Texas. It was built by René-Robert Cavelier, Sieur de La Salle as part of France's efforts to expand its territory in North America. The fort served as a base for exploration and trade but faced challenges, including conflicts with local Native American tribes and supply shortages. The fort was abandoned in 1689 after a series of difficulties, including the death of La Salle. Although it was short-lived, Fort Saint Louis played a significant role in early Texas history and the European colonization of the region. Today, its site is recognized for its historical importance.