The Cíes Islands, just off the coast of Vigo, are home to one of the world's finest beaches (Rodas Beach), and are easily accessible by sea. Only 2,200 visitors per day are allowed on the islands, so do reserve your spot in advance if traveling during high season or at the weekends.

Venetian rule in Santorini extended from 1207 to 1580 and the last vestiges of this historical period live in the castles that dot the entire island. Five fortresses can be found in Santorini in Oia, Pyrgos, Emporio, Akrotiri, and Skaros, which have been partly demolished by the earthquakes that shook the island in the 15th and 16th centuries. Skaros is probably the most important and well-preserved among the five castles, built on the peak of the namesake rock to protect the village from pirate attacks. The ruins of the once magnificent fortress can be reached on foot from Agios Georgios church in Imerovigli, connected to Skaros by a 0,5km walking trail and a long stairway.

The Jervis Bay area features several lakes, inlets and calm surf beaches from where you can begin a stand-up paddleboarding adventure. Most locations have nearby parking if you're bringing your own paddleboard, or there are several operators along the coast offering rental, tours and private or group lessons. Paddleboarding in the Jervis Bay Marine Park gives you the chance to be surrounded by colourful sea life including dolphins, eagle rays, penguins, fish and birds.