Grand-Hôtel du Cap-Ferrat, A Four Seasons Hotel

What the classifiers highlight

Gustave Eiffel drew the cupola in 1908, and the house has sat near the tip of the peninsula ever since, inside seventeen acres of parasol pines. Forbes goes for the seawater infinity pool cut into the rock above the Mediterranean. A wing added in 2009 gave the terrace suites pools of their own.