Translation of remind in Spanish

And I think it is really good idea for us to writing with each other in Spanish or English. however i am still beginner for Spanish learning. It seems still impossible for me to writing to you in Spanish. But i hope i can do it soon.
It must have taken them years and ten's of thousands of workers to accomplish the tasks of constructing such spectacular compounds. We took many pictures and walked back to the taxi.
We first took a regular bus to the border, which was basically just an empty building. There we switched to Jeeps, as the terrain was rocky. In our group there were 4 American girls and us.