You can't travel around the area without admiring Stadterhebungsmonument. This famous feature on the landscape is on most sightseers' to-do lists.
When you've spent some time at this work of art in Düsseldorf Old Town, why not make your way to Rhine Tower, Duesseldorf City Hall, and Museum Kunstpalast? They're not very far from Stadterhebungsmonument and also a hit with travelers.