The Hardwick House Orphanage (Now the Happiness House) is the orphanage Molly Moon, Rocky Scarlet, and other characters lived in. The orphanage is in Briersville, England. Ms. Trinklebury is a nanny who came once a week, before Mrs. Adderstone left to fly planes. When Mrs. Trinklebury took over, she renamed it the Happiness House. Characters associated with the orphanage are:
- Molly Moon, an orphan
- Rocky Scarlet, an orphan
- Mrs. Adderstone, head of the orphanage
- Mrs. Trinklebury, a nanny
- Edna, the cook
- Hazel, an orphan
- Ruby Azle, an orphan
- Cynthia and Craig Redmon, sibling orphans
- Gordon Boils and Roger Fibbin
- Gerry Oakley, orphan
- Jemma Patel, orphan
- Jinx, an orphan
- Petula, Mrs. Adderstone's pug.
