[1] It is part of the Circeo National Park because of its beauty and several rare biomes.

The island is uninhabited but supervised by the Forestry Service, which maintains a station and small educational exhibit on top of Monte Pellegrino, the highest point on the island.

Built on top of this former convent are the remains of a Colonial style villa once the home of Marquis Casati Stampa and his wife Anna Fallarino, who hosted orgies on the island.

[2] No special permit is required to visit the island, but Zannone has no tourist facilities and camping or overnight stays by the general public are prohibited,[1] though biologists, scientists and birdwatchers have been granted permission to camp overnight on the island.

The mouflons are now an invasive species, threatening native flora on the island through over-grazing.