Zolon has really good food and a somewhat surprising cosmopolitan atmosphere. Most restaurants in downtown Fort Worth embrace their Texan-ness, but Zolon (like its sister restaurants Zoe and Angeluna) could have been swiped from a more urban setting (say Chicago or San Francisco).
They have amazing macaroni and cheese (really.) and I love this sauteed baby spinach with cheddar cheese and cayenne pepper side dish. It's a little in the expensive side, but worth it every once in a while. Lunch is relatively affordable.