After Ireland-The Tomb in context

I can not recall where we headed, but I can tell is there is also a Stonehenge in the Ireland, however, it looks like Irish calls The Tomb in context.

I have to say Rome Empire must be really strong and powerful, as not only in this place, but also in Bath (Wales, UK), I have been visited the proper Stonehenge, that one is really massive and amazing, especially people don't really understand how it happened? However, based on those papers and documents, we people still don't believe that Rome can make it, as those stone are really huge and heavy, people wonder how? Exactly, how? maybe Rome have advantage technology and smart people to organise it.

Regarding this, some people assume it is sort of religious or manners, such as pray! I believe that's the most common acknowledge for this. But what I don't understand is were they really strong enough to carry on those stones, even orgnaise it, what a incrrideble job they had and left a such big fuzzy to us.

On the other hand, you can also wow Rome Empire was really strong in early thousands years ago, from south Europe to North Europe, but how about now?