Go up the bell tower in the Lebinius-church for some amazing views as well as the bullet holes in the walls outside.
Deventer has its own Leaning Tower of Pisa, the 'Waag' courthouse, that leans over quite a lot.
See the bridge where the film "A Bridge Too Far" was shotArnhem was no longer in a similar historical state to the way it was during WW2.
See the Motorcar museum.
Take a walk on the river promenade, if it's not high tide.
Visit various antique shops in the Walstraat, in the Bergkwartier
