Gradac is a municipality in southern Dalmatia, Croatia. It is situated halfway between Split and Dubrovnik. The town of Ploce is 12 km south of Gradac, while the town of Makarska is 42 km north. The municipality consists of the coastal settlements: Drvenik, Zaostrog, Podaca, Brist and Gradac that marks the end of the riviera and the county.

The remnants of the old tower from the 16th century can be found in the abandoned village of Cista above Gradac, the seat of the ancient Fragostin's district.

Surrounding it are still the remnants of rows of abandoned houses with typical architectonic features of the region. One of the oldest existing edifices in the territory of Gradac is the chapel of St. Pasquale on the Mt. Plana, with a barrel shaped vault, and a saddle roof.

Next to the old parish church of St. Antonio there is a local cemetery and the new parish church of St. Michael built in 1852, precisely in the zone of Gradina, the ancient Roman locality. In the church, there are three marble altars with statues. The most interesting among them is the old wooden statue of St. Rocco. In the church there is also the old baptismal stone font, originating probably from the old church.

Gradac is very well known for it antifascist and partisan history. Gradac has a memorial to citizens killed by the Yugoslav Partisans during World War II. Before war in the 1990s, Gradac had a memorial statue of an unknown soldier made by well-known Croatian sculptor Antun Augustincic dedicated to partisan uprising during Second World War. It was destroyed in 1992.