A private island in the Florida Keys is built on a coral reef; a wave-inspired houseboat; a residential aquarium in London.
A private lake in Washington; a water retreat in Nevada; a Coast Guard base in the middle of the Atlantic Ocean.
A tropical paradise in Louisiana; a Florida yacht with every amenity and a private crew; Shell House in Mexico.
A paradise on the Australian coast; a Hawaiian getaway; a private resort in Mexico's everglades; water-themed houses.