Four Corner Heights Traditional Cache

The sky is the limit of this cache's context clue comprehension. No major struggle of any kind should be required other than what the cache itself uses, else I would have put it in the attributes ;) Neighboring muggles may be walking down the road at various times, and if asked, just tell them a Frying Pan Farm Lane owner left a puzzle. And if you see a man walking a big ol' German Shepherd named Ringo, don't worry, he's a big softy.

On one corner, a mansion, 
Big gate to behold.
Another one of gravel
And also my home.
A third trespasses down
To an old oyster house,
And last is Carmines
With water all about.

So this cache here
Is sure to challenge,
But with higher thinking
You can probably manage.
Tied up not by a cobweb,
Nor technically string;
If I'll be honest,
This is a little bit mean. 

I most highly recommend
Searching in the light,
But a reflection's glimmer
Would do you alright.
You've surely seen similar
Hiding in storm drains,
But this is the opposite
Vertically flipped; what a pain. 

So once you've searched
And had your fun,
Please return it
To where it had begun. 
Put it up lightly
So it can be got again.
If it happens to break,
Then send me a DM. 

My goal is to bring some geocache activity back to these parts where it has been decisively lacking, so won't you join in for a hunt or a hide of your own?