Isla Mujeres, Mexico
If you're going on a beach vacation, why not go all out and stay in a larger-than-life seashell? Owner-artist Octavio Ocampo created this 5,500-square-foot home in 1997. The seashells-by-the-seashore aesthetic doesn't end with the exterior: Details such as a bathroom sink made of conch shells with coral faucets and a shell-shaped showerhead finish the look. Made primarily of concrete with recycled and found materials, the property—complete with a private pool and housekeeper—is available for vacation rental.