Shell Cottage is the home established by Bill Weasley and Fleur Delacour after their marriage in the summer of 1997. Located on a cliff overlooking the sea, the cottage is described as lonely but beautiful. Its most distinctive feature is its exterior, which is whitewashed and embedded with a variety of seashells, giving the cottage its name. The property includes a small, walled garden. The interior is small and cozy, with a light-filled sitting room offering a view of the sea, a tiny kitchen, and several small bedrooms on the upper floor. Following the fall of the Ministry of Magic and the increased danger to members of the Order of the Phoenix and their families, Bill cast the Fidelius Charm upon the cottage, making himself the Secret-Keeper. This turned Shell Cottage into a highly secure safe house for those opposing Lord Voldemort.
Shell Cottage becomes a pivotal location in Harry Potter and the Deathly Hallows. It serves as a refuge and a planning headquarters for Harry Potter and his friends following their harrowing escape from Malfoy Manor.
The group, including Luna Lovegood and Dean Thomas, remains at Shell Cottage until Harry, Ron, Hermione, and Griphook depart for their raid on Gringotts.