How do I check to see if an object is at specific X and Y coordinate?

I have objects called "Obstacle" that are all over my layout and I need to be able to check certain coordinates to see if they are in that specific location.

I know the X and Y coordinates I need to check, but I don't know how to do the test.

In pseudocode it would be this:

If Obstacle exists at position Layout.X , Layout.Y Then ...

Else ...

Any help would be much appreciated.