10.Thanda Island, Tanzania – $10,000
Christin and Dan Olofsson, Swedish philanthropists and businesspeople who own South Africa’s Thanda Game Reserve, own Thanda Island, 16 nautical miles off Tanzania’s coast. The Olofssons value their obligation to preserve the Island’s natural ecosystem. Thus, they maximized solar and off-grid energy and planted native plants and shrubs to restore local flora. Thanda Island’s private marine reserve is sustainable, so divers and snorkelers may see the island’s beautiful water life. Walking, sunning, eating, and relaxing on the gorgeous island are great. Thanda Island requires a three-night, $10,000-per-night visit, but it includes full board.