Translation of flank in Spanish

At around two o'clock we arrived at the main attraction. It was the Angkor Wat itself. An amazing view captured our eyes when we entered the gates and saw this wonderful palace in front of us.
We kept asking people how long the walk was and it seemed to stay half an hour even though we past half of it. On the way up, a group of children were playing traditional music for the tourists.
Yes, I know that because I have visited there. I speak German and I am working on my Spanish. Where are you from originally? Are you going to a some language school and what is the best way to learn for you?