The Soviet World War II Military Cemetery and Memorial in Treptower Park

Not something covered in my American guidebook.
I figured out where this was from one of the bike tour company brochures at the TI. I think there's also a war memorial made from a Soviet tank in this park too, though I didn't find it.
Instead I stopped for an ice cream at a bier garten on the Spree that was hosting a Dixieland jazz band. I'd have stayed for lunch but all that was on the menu was eisbein which from the smell I could tell was boiled ham hock, greasy fries and curry wurst.