The State Line Post Office and Federal Building is located on the border of Texas and Arkansas. It is the second most photographed post office in the United States, making it a popular spot for visitors.

The Draughon-Moore Ace of Clubs House is an Italianate Victorian home built in 1885. It is shaped like a club, stemming from a legendary poker game, and features original furnishings from the 1720s to the 1940s.

Discovery Place Children's Museum offers hands-on exhibits for young kids. It's a fun place to learn about science, art, and nature through play.

The Four States Auto Museum displays vintage cars and trucks from the 20th century. It showcases over 50 vehicles, representing Texas, Arkansas, Louisiana, and Oklahoma, and tells the story of the region's automotive history.

1894 Gallery features a stunning collection of Southern art, including paintings, watercolors, wood arts, and intricate glass pieces. Housed in the historic 1894 City Market, it offers a unique blend of art and architecture that attracts both lookers and buyers.