Translation of obstinate in Spanish

However I must say that if one is not very interested in archaeology or in architecture a two days visit would be enough. Unfortunately we had only one more day in this beautiful country.
I am learning Spanish in university but I also have to improve it for private reasons. Do you have any suggestions. It is giving me a hard time lately as it is difficult. I need to be very patient.
The next day we had to take the bus in order to get back to the airport in Calama. When we arrived at the airport was empty and no counter was open yet. We had to wait for 4 hours.