Benagil Cave

Benagil Cave is one of Portugal's most spectacular sea caves, accessible only by boat, kayak, or swim from Benagil beach in the Algarve. A perfect circular skylight in the cave's domed ceiling illuminates the golden sandstone interior and the turquoise pool below, creating a cathedral-like effect that has made it one of the most photographed natural wonders in Europe. The cave is best visited by guided boat tour from Benagil or Portimão.