Complex sentence: The Firs standing above Leithen Water on Horsbrugh Terrace, Innerleithen, where he was able to engage in his favourite outdoor pursuits, including fly fishing on the Tweed and Leithen Water and hill walking.
Split into simpler sentences: The Firs standing above Leithen Water on Horsbrugh Terrace, Innerleithen. Where he was able to engage in his favourite outdoor pursuits, including fly fishing on the Tweed and Leithen Water and hill walking.