Take the 1.5 trip by ferry from Cannes to Saint-Tropez with views of the French Riviera coastline.
http://www.trans-cote-azur.co.uk/cannes-saint-tropez.php
Saint-Tropez history includes it’s early days as a military stronghold in the 15th century, the first town on the Mediterranean coast to be liberated during World War II, a destination for artists and musicians after the war and then a seaside resort for the European and American elite and celebrities.
Have lunch on Rue Sibille at this delicious creperie with just a few tables inside.
The Citadelle de Saint-Tropez was built in 1602 to defend against Spain. The citadelle can be reached following the street near the tourist information office at the port. Winding through the city streets until you reach a steep hill with signs pointing the way. There is a small charge to enter. The views are outstanding. There is a maritime museum in the dungeon.