Fortress of Bourtzi
The castle of Bourtzi (Greek: Μπούρτζι) is located in the middle of the harbour of Nafplio. The Venetians completed its fortification in 1473 to protect the city from pirates and invaders from the sea. Until 1865 it served as a fortress. It was then transformed into residence of the executioners of convicts from the castle of Palamidi.
Open Water Swimming
- Bourtzi is site of one of the Triple Break swims (Triple Crown of Prison Island Swims), where swimmers challenge themselves to escape by swimming at least 3 of the world's most well-known prison island swims including Le Château d’If, Fort Boyard, Devil's Island, Île de Gorée, Robben Island, Alcatraz Island, Spike Island, Rottnest Island, and Sainte-Marguerite.
- Jacques Tuset completed a prison island swim in 2017 from the castle of Bourtzi.