A guided tour is the best way to go around. You get to find out many symbolic things. The bell is designed to ring every 4 seconds to remind the visitors that every 4th Belarusian dies in WWII. The monument of a man carrying his dead son out of the fire is striking - especially knowing that from the whole village this was the only man who survived, and the rest including his son were burned alive.
Highly recommend this place for history lovers, as you see WWII from a different angle. You do not get this kind of experience in US WWII memorials, mainly because so many people were lost and so much wealth destroyed by the Nazis.
The place is a bit depressing, obviously, but still very good to visit

A very interesting place and a great history. Noone will leave without thinking of how it was hard and how the belarussians did it. Every 4 seconds, when the bells ring it touchs everyones heart