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If you ask me, this place is even more dangerous than the Ares' Cabin. At least with Ares, you can learn where the land mines are.

Annabeth comparing Hypnos' cabin to Ares' Cabin, The Lost Hero

Hypnos' Cabin (#15) is the cabin that houses the demigod children of Hypnos. It is described as an old-fashioned prairie house, "not so dramatic" compared to the other cabins.


The cabin is made of mud walls and a rush roof. A wreath of red poppies hangs on the door. Inside, there's a hearth with a crackling fire. Above the mantel hangs Hypnos' symbol: a poplar tree branch dripping water from the River Lethe, into a collection of tin bowls. Soft violin music is always playing, and the air always smells like fresh laundry. The smell of Clovis's breath indicates there's warm milk in the cabin. There are always plenty of empty beds, all with feather pillows, fresh sheets and fluffy quilts. The Hypnos cabin makes everyone feel like sleeping, with its cozy and comfortable feel. Jason Grace almost buckled on his knees and fell asleep, but Annabeth Chase "snapped him out of it" and she described the cabin as being more dangerous than Ares' Cabin.

Known occupants

Magical items


  • Hypnokinesis
    • They are capable of memory retrieval.
    • They are capable of memory alteration.
    • They can induce sleep.
    • They can use hypnosis.
    • They can astral project/dream travel. (when asleep)
    • They can manipulate dreams.
1st: Zeus Jason Grace | Thalia Grace (Temporarily)
2nd: Hera None: "Hera doesn't run around having affairs with mortals. That is her husband's job."
3rd: Poseidon Percy Jackson | Tyson
4th: Demeter Katie Gardner | Miranda Gardiner | Meg McCaffrey | Billie Ng
5th: Ares Arnold Beefcake | Clarisse La Rue | Sherman Yang | Mark | Ellis Wakefield
6th: Athena Bea Wise | Annabeth Chase | Malcolm Pace
7th: Apollo Lee Fletcher | Michael Yew | Will Solace | Kayla Knowles | Austin Lake | Yan | Gracie | Jerry
8th: Artemis Hunters of Artemis
9th: Hephaestus Charles Beckendorf | Jake Mason | Leo Valdez | Nyssa Barrera | Christopher | Harley | Shane
10th: Aphrodite James Dean | Silena Beauregard | Piper McLean | Drew Tanaka | Lacy | Mitchell | Valentina Diaz
11th: Hermes Luke Castellan | Connor Stoll | Travis Stoll | Chris Rodriguez | Cecil Markowitz | Alice Miyazawa | Julia Feingold
12th: Dionysus Castor | Pollux
13th: Hades Nico di Angelo
14th: Iris Butch Walker
15th: Hypnos Clovis
16th: Nemesis Damien White
17th: Nike Laurel Victor | Holly Victor
18th: Hebe Paolo Montes
19th: Tyche Chiara Benvenuti
20th: Hecate Lou Ellen Blackstone