This a Bluestone Patio we just finished up out in North Bend. We typically do mostly paver patios so this was a nice change of pace. Our clients had a small concrete patio off of the back of their house as their only outdoor gathering place. We removed about 300 square feet of the existing lawn to prep for the new Bluestone patio. We try to keep the flagstone looking as natural as possible while keeping the gaps between stones pretty tight. It requires a lot of cutting but the finished product really looks great! A major advantage of using pavers or flagstone over concrete is the ability to fix portions if they settle out. Once concrete settles, it cracks and there is nothing you can do but remove it and start over. Just something to keep in mind when trying to decide between concrete or a sand set patio. They also had a small retaining wall that would look a little odd next to a flagstone patio so we removed it and replaced it with a stacked basalt rockery. Our clients now have a great patio space to entertain during the summer months!