Old Point Isabel Lighthouse
Port Isabel, Cameron County, Texas
Marker Inscription
The beacon for the commerce of the Rio Grande; Erected by the United States Government in 1852; Extinguished during the Civil War; Discontinued, 1888-1895; Permanently discontinued, 1905
Erected by Texas Historical Commission
The Story
Raised by the federal government in 1852, this lighthouse guided the busy commerce of the Rio Grande's mouth, where steamboats and coastal traders converged. Its light went dark during the Civil War and flickered in and out of service for decades before being permanently extinguished in 1905, a small monument to the rise and decline of Gulf maritime trade.
Why it matters
Coastal lighthouses were vital infrastructure for 19th-century commerce and national defense, and this one marks the strategic importance of the lower Rio Grande as a gateway for trade.
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