Poseidon's Cabin (#3) is a long, high building with windows facing the lake, and looking like it's made of rough lake stone, with pieces of coral at the end of the cabin and a seashell and a trident over the door. Percy described its smell to be same as the cabin at Montauk where his mother and father met. Percy also states that there is always a sea breeze blowing through it. Inside: walls made of abalone with rows of neat bunks, and a salt water fountain.
