Stonehenge - The Suspended Stone -

As suggested by LegoIDEAS_FAN. I prepared the background in dark green color.
Definitely better than the previous color.
Thanks so much friend

Here you can see how the stones are fixed to the base:

As rightly pointed out trebuchett user, I modified the height of the main arches:

Here you can see how this project has been made.

From a planimetry of the original site to the final model:

Here you can find the full picts:

https://flic.kr/p/JpRgWE

https://flic.kr/p/HCChPP

https://flic.kr/p/HCCgRX

https://flic.kr/p/JyNT5a