Seguin, one of the oldest towns in Texas, was founded in 1838 by a group of Rangers and named in honor of Juan N. Seguin, a distinguished Mexican-Texan. In the late 1800s, many German immigrants settled here, and cotton was king. An oil boom in the 1930s financed a legacy of handsome Depression-era public facilities. The 26-square-block downtown historic district is listed in the National Register of Historic Places, with many buildings dating to the early 1900s and some as far back as the days of the Republic of Texas.

Self-guided tours pass hundreds of 19th- and 20th-century homes along tree-lined streets. Information is available at the tourist information center. Visitors also can see animals, crops being grown, an 1800s home, barn and a blacksmith shop at the the Texas Agricultural Education and Heritage Center, open by appointment only. Call 830/379-0933 for information.

Annual events include the Guadalupe County Fair and Rodeo and Pecan Fest in October.