A venerable witness to a prestigious past, Clervaux castle now houses the offices of the local government, the reception of the "Syndicat d'Initiative" (local Tourist Office), a collection of models of Luxembourg's old fortified castles, a small war museum exhibiting weapons and souvenirs from the 1944-1945 Ardennes offensive (Battle of the Bulge), and the remarkable collection of documentary art photography, the "Family of Man" by Edward Steichen.

Near the Benedictine Abbey, a historic monument in the form of a cross can be admired. It is a 12.5 metre high stone construction which was erected in 1899 to commemorate the heroic fighters at the time of the French invasion from 1795 to 1798. Two bronze bas-reliefs show scenes from the Oesling peasant's revolt against the French troops. Below a simple phrase, but one which is filled with pride and heroism, reads: "We don't know how to lie"