Just West of El Paso, at Santa Teresa, NM, (5T6) is one of the best little aviation Museums you never heard of. The War Eagles Museum is a real neat place. Allow about three hours at least to see it all.
http://www.war-eagles-air-museum.com/aircraft.html
Afterwards, you can play the ponies at Sunland Park.
If you still want some challanges, you can then hop over/around the Franklin Mountains and pick up the VFR corridor between Mcgregor and White Sands Ranges up to Alamagordo, then over the hills to Ruidoso. (SRR) Pretty high runway, make sure you know about density altitude and some mountain flying. If SRR didn't make you breathe hard, then head north up to SAF and then follow the Rio Grande to Alamosa, Co. Continue north over Poncha Pass to Leadville, Co. elevation 10,000'. Plan to leave when the temps are very cool, and at very light weight. I'd consider a C-182 or Archer or similar a MINIMUM aircraft for Leadville, and only in cool-cold temps. Then try picking your way over Independence Pass to Aspen, and on down to Grand Junction.
In nice weather, the scenery is un-beatable. If the wind is up, or WX is marginal, DON'T FLY!!! At least not without a turbo'ed twin, oxygen, and an IFR rating if necessary. Be SURE you have some quality instruction in mountain flying before tackling the "Fourteeners" of Central Colorado....