Translation of description in Spanish

I hope you can understand the corrections this way... Two small errors. let me know if there is a word or sentence or phrase that you didn't understand! I will try to think more on the "since" question...
We continued to the entrance of Angkor Wat. They told us that if we would wait until after five o'clock we could enter with next day's ticket and still see the sunset. We waited and entered at five.
In Colorado there are amazing mountains, belonging to the Rocky Mountains and in New Mexico you have the really gorgeous desert areas. Some other states there have also large desert areas.