For a memorable history lesson, visit the crumbling remains of Akizuki Castle Remains and imagine how it must have looked in its heyday.
You'll have no end of sightseeing choices when staying in Asakura. Akizuki Castle Remains is a great place to start here, but there are numerous other fine spots to check out. Kirin Beer Park, and Chikuzenmachi Tachiarai Peace Memorial Museum are near the once-important structure and will top off your day nicely.