The 77-year-old actor took to Twitter where he posted a series of photographs sitting in the vacant audience rows of the famous centre of arts set in Poole.
McKellen took a trip down the memory lane where he wrote that it had been 39 years he performed on the stage at The Lighthouse for the Royal Shakespeare Company.
".@poolelighthouse where 39 years ago, I was on stage @TheRSC "Small Scale Tour" visited over 20 UK towns Memories!" he tweeted.
The "X-Men" star adds, he took the "Small Scale Tour" to 20 towns across the country.