Las Vegas, Nevada
I recently took this trip on my own as my husband was tied up with a business conference. I can really recommend it. The tour guide was really interesting and knowledgeable. The scenery is stunning. It was really great to get out and see the countryside after the madness of the strip. The only downside was that there was relatively little walking. I had hoped for a bit more hiking but the walks were really only a short stroll from the bus and back.