Sir James Knott Memorial Flats...

 in Tynemouth...
"They were probably the first-ever flats built with special features to help tenants withstand air raids, essential with the gathering clouds of war. Building started in the 1930s and by 1938 they were nearing completion.

Two of the special features were the use of fire resistant materials throughout, unusual for those days, and the huge cellars designed as air raid shelters. It was thought these flats could have become a prime target for Nazi bombers as they stood on a high cliff overlooking the mouth of the Tyne, above the dangerous Black Middens reef and looking out to the North Sea.
The building was also to boast what was believed at the time to be the biggest clock in the North East.The timepiece was to be electrically worked and was 12ft 6in in diameter, making it easily visible from across the river in South Shields."

This is the view from the landward side... and the clock is now working again ;) 
Thanks Nickimags for hosting MonoMonday this month!