If you want a great view of Dublin Bay all the way along Sorrento Terrace, Dalkey Island and out to Bray Head – this is the place. ‘The Pyramid of Dublin’ is an odd stepped pyramidal folly built in 1852 on the edge of Killiney Hill by Robert Warren who was then the present owner of Killiney Park and Killiney Castle. The top of the pyramid is made with granite but the rest of the structure is limestone. It is located beside the Killiney Hill Obelisk in Victoria Park.