First two images are not mine. It's an example of a nice garden.
The third image is my own design and construction in Oregon. We have lots of rain and heavy winds on the Coast of Oregon. It is not practical to keep an authentic Japanese garden... the wind and the constant trash from the trees in the forest would make it impossible.
The island was created by me, and the inside has my own designs and material to draw lines in the 'sand'. (actually it's pea-rocks :)
The tea house was functional 20 years ago. The climate here too wet and hostile to maintain it in original condition. Now it serves as a garden tool shed.
The entire garden fence has Passion Flowers winding on top. Taken 20 years to make a near circle. Arbor Vita trees were planted when the island was created. A circular driveway around the island makes it easier to leave the property of 1.3 acres.
Circular driveways are on mega million properties.... as usual :)