Blue Mountains NSW, AU.
It's in every Sydney tourist brochure: the Blue Mountains and the Three Sisters. Three piles of rocks that sheeple sight seers flock to in droves. You'll have to trust me that these rocks will be an underwhelming sight.
You should instead, seek the waterfall which is a short descent from the Katoomba Kiosk path. It is slightly off the public path so you'll need directions on how to reach the secret waterfall and pool.
Find more pictures and details after the jump: