"At that time it was as if I had gone somewhere else."

Translation: Naquela hora foi como se eu tivesse ido para outro lugar.

[AlexTheTutor]

I just wanted to make sure. I think I am right, but they marked "ao" as wrong and instead wanted me to write "para":
Naquela hora foi como se eu tivesse ido AO outro lugar.

[Paulenrique]

No. With "outro lugar" you use just A, not AO

[elvenqueen]

"ao" is the preposition "a" plus the article.