NOSTALGIA

nostalgia [nɒˈstældʒə -dʒɪə] n

1. a yearning for the return of past circumstances, events, etc.
2. the evocation of this emotion, as in a book, film, etc.
3. longing for home or family; homesickness

[New Latin (translation of German Heimweh homesickness), from Greek nostos a return home + -algia]