Translation of notably 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.
Please correct me, if i misspelled something! Where are you living? What are you doing in your life? I hope it's okay if i correct your mistakes. I wish you could do the same for me, it will help my writing skills.
At noon we continued to the Altiplano to visit some lakes and volcanoes. At 4000 meter above see level it became suddenly extremely cold and our heads started to spin. Altitude sickness?