The 6th Floor Museum (about JFK's assassination) is excellent.
Nasher Sculpture Center - One of the greatest modern collections that you do not have to be an art connoisseur to enjoy. Tranquil setting with Renzo Piano Architecture and Peter Walker Gardens
If you like night life find your way to the Uptown area. Lots of restaurant/bars with a great selection of cuisine.
2012 Greenville Ave
Dallas, TX 75206
Really good music (think Notorious B.I.G. - Juicy) and where the hipsters hang out.
Zubar is pretty amazing. DJ Select is there every Wednesday night spinning dancehall and reggae.
Most of Lower Greenville in general is a great place to hit up on the weekend if you're looking for some fun.
Nasher Sculpture Center - One of the greatest modern collections that you do not have to be an art connoisseur to enjoy.