This is excellent: “The spite tower”

https://en.wikipedia.org/wiki/Wainhouse_Tower

One driving force behind the erection of the viewing platforms was a long-standing feud between landowning neighbours John Edward Wainhouse (1817–1883) and Sir Henry Edwards (1812–1886). Edwards had boasted that he had the most private estate in Halifax, into which no one could see. As the estate was on land adjacent to the chimney’s site, following the opening of the viewing platforms, Edwards could never claim privacy again.