As part of the 21st Century Schools investment Ysgol Gymraeg Ystalyfera is now a modern setting with buildings that fit the education requirements of modern Wales.  The Darren block is home to the Chiswell Theatre, the Giedd Restaurant and the Gwrhyd work area. Stiwdio’r Cwm and Craig y Nos are now home to the Drama Department, Pantteg and Alltygrug are full of Music Department instruments, and Henrhyd, Aberpergwm Gurnos, Tarenni and Gleision are the rooms of the Humanities Department. The wonderful names of the local area embed the school in its local area and the pupils now love their new home.