The fortified walls of Flers Castle have helped it stay standing over generations. Take in the architectural features of this imposing structure from a distance or see if there are any tours.
You'll have sightseeing choices galore in Flers. Flers Castle is a great place to begin here, but there are lots of other worthy sights to appreciate. Saint Germain Church, Houlme Golf Course, and Delaunay Square are not far from the fortified complex and will fill in your day nicely.