Grand Rue’s most attractive section is around Place Victor Abens, where the town hall stands astride a small spring. There’s an attractive church and an easily missed alley beside Hotel Heintz leading to a pretty cloister that was once at the heart of the 1248 Trinitarian Monastery.
The stairway between Grand Rue 58/60 (also the alley between 106/108) takes you towards an isolated 1603 belfry standing on a ridge outcrop. It’s closed to visitors, but it's a nice view from here.