As requested by our resident homebuilder here at The Plan Collection... Here are some great house plans with Gyms inside. One of these homes was designed specifically for a lot that had a tremendous slope to it. It was a good example of creating a design that took advantage of the conditions of a lot that generally would make it very hard to build on. Jaren and I worked on this design together and came up with a great plan that takes full advantage of mountain views, made a steep lot functional for gatherings and even got a gym in the home out of it. Take a look at the plans: