Translation of avenger in German

We made a little walk into the main street of the town and were looking for a nice place to eat. This time we settled for an Indian restaurant close to the restaurant we were a night earlier.
We really felt like being in a stupid tourist attraction. The environment was very beautiful but the mass of people would ruin our special moments. Anyway we had one more surprise on the way back.
My sister just moved to Boston, Massachusetts and I visited her for two days only. This means that I do not know the city but what i saw of it was really nice. I will visit her next month or so.