。
My house faces the sea.
Literal
I [of-の] house [topic-は] sea [to-に] facing-is.
面する ('to face, to front onto') is used for buildings and plots of land facing a street, sea, plaza, etc. Takes に for what it faces. ~ている marks the resulting state — the house's perpetual orientation. Near-synonym of 向かう but more architectural/geographical.