Nemrut is one of those places. Search the word hierothesion, and you won't find an easy definition. What you'll find is a link pointing over to UNESCO world heritage site, Nemrut.
To paraphrase what I learned:
Nemrut is believed to be the burial site of King Antiochus I Theos of Commagene, high on the mountain top overlooking his kingdom. Hierothesion refers to the way the statues of the gods are arranged at the site. (see restoration below)
Now here's where I go off track a bit.
The statues are enormous (8–9 m/26–30 ft). Depictions of Hercules/Vahagn, Zeus/Oromasdes, Apollo/Mithra, Tyche, plus paired eagles and lions, flank the king. To confuse me some more, the statues wear Persian style dress/hair, but were carved with Greek faces. (And why are all the guys identified in Greek/Persian, but Tyche, the goddess of fortune, is only Tyche? I'm voting to call her Tyche/Mah, but what do I know?) It seems the hierothesion falls at some sort of midpoint between the two belief systems, circa 62 BC.
Maybe that isn't such a travesty after all. The statues are interesting, but I think the detached heads are what make the site unique.
The image on the right of a restored Nemrut is from an Icelandic source that I couldn't really translate well. (Feel free to follow the link and try for yourself.)
For a long time, not many people made it out to Nemrut. It's out past Malatya, near Adiyaman in eastern Turkey. Read: very far from the beach.
Tourists are coming much more consistently these days. Now Malatya and Adiyaman are fighting for road access rights, airports, and hotels. I think before they worry about the tourists, they should worry about the statues. More people means more deterioration of the site.
Controversy over Mt Nemrut spreads
And PS - No spoilers in the comments, LTM! ;)