I'm not fully decided whether this should be here or in Town, but I created it with trains in mind so I've put it here. "Create a garden for your theme"... well, that's clearly going to be trains, so I can either put a garden in a train or a train in a garden. With only a 16x16 area, I thought a railway wagon might be a a bit small (but @Pdaitabird proved me wrong, so I'm glad I didn't try it!). However, I thought a LEGO minifig-sized garden railway might work... and it does!
The young and the old railway entusiasts watch as an unidentified BR tank engine hauls a pair of Carmine-and-cream MK1s around the loop, endlessly...
The garden features every LEGO plant, flower and shrub I own! It also features a miniature station building, a bench for Grandad to rest on, and a small workshed - complete with toolbox and cup of tea/coffee/hot beverage.
Behind the shed is the control gear, that via a few bevel gears turns the green disc the train is fixed to, causing it to rotate. In an ideal world the turning disc would be grey and the the central "island" green, but I don't have the parts in the right colour so they're the other way around!
Finally, you can see it in action below! If the GIF doesn't work, try clicking here: https://gph.is/g/aev79Nk
And as ever, more photos are hosted at Bricksafe: https://bricksafe.com/pages/Collet22/ebfs-garden-railway- Thanks for looking!