What city is overlooked by the Blue Mountains?

Answer:
The Blue Mountains overlook Sydney, Australia's largest city.
For the first twenty five years of settlement, the Blue Mountains served as a virtual prison to the colony, preventing exploration beyond Sydney because of their, sheer cliffs and impassable ravines.
First answer by On the Wallaby. Last edit by On the Wallaby. Contributor trust: 2782 [recommend contributor recommended]. Question popularity: 0 [recommend question].