Serious Eats - seriouseats.com

I'm surprised no one has mentioned the Grand Concourse in the Station Square area over the Smithfield St. Bridge. I believe the building is an old railroad house. It's a steak and seafood place with a very extensive yet expensive menu. I went there with my girlfriend for our one-year anniversary last summer on a vacation to Pittsburgh, and they even printed a 'Congratulations' to us at the top of our menus, which we got to keep. I remember the food gave us multiple yumgasms.