Downtown Marietta features Glover Park, the historic town square and former location of the county courthouse.

The Square is the site of several cultural productions and public events. Incorporated in 1982, Theatre in the Square is a year-round professional theatre, producing a five-show subscription season as well as summer and holiday shows. The Strand Theatre is currently being renovated back to its original design and will open to feature classical films. The Marietta Gone with the Wind Museum, also called "Scarlett On the Square", houses a collection of memorabilia related to both the book and the film.

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The city has a landmark on US 41, the Big Chicken.

The CSX freight trains between Atlanta and Chatnooga (Western & Atlantic Subdivision) still run a block west of the town square, past the train depot (now the visitor center) and the Kennesaw House, one of only two buildings in Marietta not burned to the ground in Sherman's March to the Sea.