Let's share some fantastic, bizarre, and weird real world locations that would make perfect fodder for #ttrpg !
My own contribution is "Christ of the Abyss", a bronze statue of Jesus that was deliberately sunk into the ocean off the coast of Italy in 1954. Two other statues were cast from the same mold later on, and sunk at Grenada and Florida.
I find the very concept of religious statues being sunk into the ocean fascinating - and, of course, in fantastic worlds people might have an easier time visiting such statues. Perhaps they have acquired some magic that allows them to breathe water for some time, or perhaps they are naturally amphibious. Or natural water breathers - perhaps there is some trade deal with surface dwellers where land-based religious items are created for aquatic civilizations that they cannot manufacture themselves.
What other such weird locations do you know of?
Pamukkale in Turkey.
It's a really cool hot springs area where the minerals are super saturated in the water and so deposit out in calcium carbonate. Over time it becomes travertine. But just the location itself looks super interesting.
In a similar vein, the salt flats in Utah. When there's been a rain and there's standing water over the flats, it becomes a huge reflection - absolutely fantastic set piece for both some unique RP or for a really interesting battle.
Your salt flats comment calls to mind certain areas of the Exumas, an archipelago in the Bahamas, specifically in the cuts between cays where the tidal flows drain from the sounds onto or off of the flats. It is possible to sail into what appears to be uninterrupted shallow ocean, anchor, sleep, and wake to find yourself floating in what is essentially a puddle surrounded by limitless, gently undulating waves of glistening sand in every direction, trapped until the tide reverses. Surreal, ethereal, alien.