I love the viewing deck on that Mountain Retreat house, and the old photo of the Overview residence.
Not residential, but famous are the following:-
....
Both designed by Sir Giles Gilbert Scott, who was clearly unfazed by the size of a project.
His son was an architect too, and got the prestigious job of extending London's Guildhall, a kind of nerve-racking commision because the Guildhall, through various incarnations, dated back to Saxon times:-
See the strange black curve in the paving? That's a marker indicating the position of a Roman amphitheatre which was discovered while they were excavating for the new building.