In 1938, Canon Chartier built a wooden house with a tower on top of the highest rocky summit of the island, with three footbridges and a two-storey boathouse.

He named this house Odanak (which means "at home" in the Abenaki language), and had many trees planted all over the island, especially numerous white pines.

Only the concrete base of the house's chimney remains today on the small island.

In 2005 and 2006, the islands of the archipelago were acquired from different owners by Bruno-Marie Béchard Marinier,[5] then Rector of the Université de Sherbrooke.

The smaller island is accessible to the public, and is a popular stop while kayaking on Lake Magog.