Both are small fortress islands accessible only by scheduled ferry, where visitors follow controlled paths through preserved prison/fortress structures. The experience is entirely dictated by boat schedules and guided routes through historic stone buildings. You're physically contained by water and time, moving through spaces designed for isolation and control.

Another historic island reached only by timed ferry service, where your visit unfolds along predetermined paths through preserved immigration buildings. The boat schedule controls your day, and the restored Great Hall and dormitories create the same sense of walking through frozen institutional time as Sainte-Marguerite's fortress.

A fortified island where access is controlled by tides and shuttle buses, and your movement follows ancient stone paths up through the abbey. Like Sainte-Marguerite, it's a preserved medieval structure surrounded by water, where the approach and departure are as ritualized as the visit itself. The narrow streets funnel visitors along predetermined routes.

A former political prison island accessible only by scheduled boat, where ex-political prisoners guide visitors through preserved cell blocks and facilities. The ferry crossing and guided tour structure mirror Sainte-Marguerite's controlled access, and both islands carry the weight of famous prisoners and state power. The experience is entirely shaped by the boat schedule and official routes.

An uninhabited island reached only by morning ferries from Mykonos, where visitors follow marked paths through extensive ancient ruins. No overnight stays are allowed, and the boat schedule dictates your visit length. Like Sainte-Marguerite, it's a place suspended in time where your movement and timing are controlled by maritime access and preservation rules.