TeraFERMI is the THz beamline at the FERMI Free-Electron-Laser (FEL) facility. TeraFERMI collects the THz radiation naturally emitted by the electron beam already spent by the FEL undulators, and guide it into a dedicated THz Laboratory. High intensity (50 microJoule), sub-ps pulses in the 0.3-6 THz range and with electric fields above 4 MV/cm are available in the TeraFERMI optical table. Because of the extremely large fields involved, the beamline can be used to shape material's properties by driving the systems out of equilibrium. Several different optical set-ups for fluence-dependent THz spectroscopy, THz-pump/IR-probe and THz pump/THz probe are available to external users, with or without cryogenics.