The terrain around Bristol is pretty undulating.  Houses are built up the sides of hills on streets that are rather steep.  However, the buildings up in the Clifton area of town seem to have made better use of the land than might have seemed likely.  From low down beneath them, they seem awfully precarious but, since they have been there for well over 100 years, I guess they are reasonable solid.  The road in front of some of the buildings clearly seems to have been built up from very little with the arches supporting the roadway built on to the cliffs.  It all looks rather dramatic.  I suspect if you are up there, you are not as aware of what is beneath you but you will have little doubt of the vantage point you have looking across the surrounding countryside!