Welcome to RTA!
In Albuquerque itself are several things. One is the National Museum of Nuclear Science and History/. Another is Petroglyph National Monument. A third is Rio Grande Nature Center State Park.
Along the way -- Colorado Springs has the Air Force Academy, and Garden of the Gods. Not all that far from Pueblo is Canon City and the Royal Gorge. You could take a side trip over to Taos, NM....so much to mention there!
But as Lifey said, we really can't offer too much more without knowing what your interests are, and how long you have for this trip. If it's a week, you do have time. It's about 450 miles from Denver to Albuquerque by the most direct route (I-25), which is a nice 8-hour drive (depending on traffic in the cities).
Donna