Ffwrnes Fach is housed within the old Zion Chapel (built in 1857), it has a pipe organ, a church-style seating gallery, and a pulpit.
Mae'r Ffwrnes Fach wedi'i lleoli o fewn hen Gapel Seion (a adeiladwyd ym 1857), mae ganddi organ bib, oriel eistedd mewn arddull eglwysig, a phulpud.