On a plateau overlooking the valley of the Creuse, Ahun Acitodunum is the former Gallo-Roman. The medieval city will extend a little higher and be surrounded by walls, still partly visible. Ahun castellanies is one of seven of the Haute-Marche.
The crypt, Ahun first church was certainly in the Gallo-Roman period, a pagan temple whose columns were reused.
Near the altar, a shrine tomb housed the medieval remains of the local Saint Silvain.
The Romanesque church was built in the 13th century, above the crypt. The facade is classic, the nave was rebuilt in the eighteenth complement. The interior has been restored to the same. The Pietà (left chapel entering) the 16th is certainly one of the wonders of this building. The choir has typical baroque carvings seventeenth.
Stone garden: evocation of Jacques Lagrange and presentation of many Ahun remains.
In the village of Busseau sur Creuse, a large metal bridge type "Eiffel" through the valley of the Creuse.