I spent some time living in Brussels and had to resist (or happily surrender to) the enticing aroma of gaufres in the metro station each day.... So I was delighted to find Waffalonia when I moved back to Pittsburgh! The waffles are authentic: so good that they are perhaps best served plain. Heads up, though; The waffles are made quite slowly (only about 5 min, but longer than what I had experienced in Belgium). Check out the Speculoos ice cream! It's made locally (by Dave and Andy's) and it's divine.
...Now if only I could find a place that served frites with andalouse sauce, I would be in true Belgian bliss!