I would say definitely yes. I visited the Grunwald Battlefield back in 2015 and the experience still stays with me all these years. As you probably know, the Battle of Grunwald was arguably the largest battle in medieval European history, it pitted the Kingdom of Poland and Lithuania versus the German Teutonic Knights during the Northern Crusades. The battle still plays a big role in Polish and Slavic national identity.
The atmosphere of the place is really something, even though for the most part it is an open field (intentionally preserved) with a few memorials, I felt the underlying atmosphere was palpable. Adjacent to the battlefield, the small museum has some artifacts from the battle, as well as some ruins of the original 15th century chapels commemorating the battle. As this is a bit off the beaten-path, when I was there in 2015, all the signs were in Polish, but the shop by the entrance to the battlefield has informational brochures in English and German.
I also visited the grand ruins of Finckenstein Palace back in 2015 and had the whole ruins to myself, not a single other tourist there. There is a small village, Kamieniec, that sprouted up from the manor's estates. The Soviets torched the place on their '45 march to Berlin, now the grand old ruins sit empty and overgrown, lost to history, save for the occasional adventurous traveler or two. I recall there is a shop on the other side of the street and if you get the mobile number from there of the land owner he can take you into the ruins.
