There's a small museum at the bottom about many national monuments in Germany. The stairs to the top might be tough but once you reach the top the panoramic view over Berlin is stunning. A 4$ entrance is fine for this place.
A beautiful monument in Berlin with a nice view from the top. If you are ready to take the stairs to the top then it's a must visit. A small admission fee (4 dollars) to enter the museum at the lower levels. The Victory Column is a must visit in Berlin.