I have had several deep 'revelations' at certain sites. I believe at that point I connected with something - still don't know what though.
As Paulus said, unless you've experienced something like that it's hard to see things in that way. The hardest part is actually admitting to yourself that something like that has happened.
To use an old phrase - You need to get out more!!! :-)
Stop looking at the monuments and start looking out from them. The world changes.