On the 4th of April 2011 I headed to London Bridge to check out Adelaide House.
Back in 1926 the building had a Rooftop Putting Green!
According to the website Skyscrapernews.com "Adelaide House was one of the first buildings in London to have air conditioning, an internal mail system and not to forget, its own rooftop putting green."
A photo of the Putting Green on the roof of Adelaide House, taken in 1926/1927 (at Heritage-Images.com).
A photo of the Miniature Golf course at Adelaide House in 1930 (at The London Bridge Museum & Educational Trust).
The building is home to Berwin Leighton Paisner LLP.
For details on courses I've visited and played since 2006 please head to the Crazy World of Minigolf Tour Page.