The Carlisle Historic District encompasses much of the old borough centre and contains a concentrated collection of 18th and 19th century architecture — Federal, Georgian, and Victorian buildings mostly intact along the main streets. It is on the National Register of Historic Places.
Hanover Street and High Street are the main axes. The old courthouse, several churches, and a good number of well-preserved commercial buildings make for a pleasant hour of wandering. The farmers' market runs on Saturdays in the central square and is a reliable place to find Cumberland Valley produce, baked goods, and locally made cheese.