Unfortunately Dallas is pretty much a bar and mall town. Not alot to see and do except for shopping, good restaurants and tons of trendy bars/clubs. For art and culture the Dallas Museum of Art and the Nasher Scupture Garden are worth a visit. The Sixth Floor Museum is also nearby.

I think Ft. Worth is more interesting Texas destination with its historic stockyards for a taste of the old west, living up to it's nickname "Cowtown". FT. Worth also has a real downtown with some nice restaurants and a great concert venue, Bass Hall. The Kimbell Museum is a national treasure. You could continue the western theme with a visit to the Amon Carter Museum or if your tastes run modern the Ft Worth Modern is just down the street.

Dallas and FT. Worth are now linked by the Trinity Express Railway which will take you between the two downtowns easily. Dallas also has a limited but decent light rail system, DART, which does NOT yet run to either airport.

have fun,
dan