It is called the hearth, and the well designed ones are flush with the floor.
Whether it has (gravitational) potential energy or not depends on what level you (arbitrarily) define as zero. If you define the bottom of the ledge as the "zero" level, then the top of the ledge will have positive energy. If you define the top of the ledge as the "zero" level, then the object on the top of the ledge will have zero potential energy (and at the bottom of the ledge it will have negative potential energy). In any case, at the top of a ledge, an object will have more potential energy than at the bottom of the ledge, because it requires work to push the object up; also, in principle the potential energy can be recovered (converted to some other type of energy) if the object falls down.
it is called a roost
A ledge.
A ledge
A ledge
A perch for a mountain goat is a ledge.
It is called a "misericord."
In the castle, you run to the fireplace and place in the log, then if you have the teen vampire romance novel, use it in the fire place too, then jump on the springy thing next to the fireplace. Jump on it 5 or 7 times and there should be a full sized fire. Now right of the fireplace should be candles, take one and light it, next run over to where the book ladder is and move it to the first shelf on the left jump on the top, then jump left onto the ledge, you should see a chandelier above you get to it and light it, do the same with the rest of the chandeliers. On the bottom left corner of the bookcase should be a glass eye jump on the bookcase again you should see a tiger with only one eye, place the eye back into the socket and there will be a key in the tiger's mouth, it unlocks the door under the ledge. Hope this helped!
you first launch above the boxes to the next ledge, then you launch yourself to the bottom left ledge, then to the final ledge.
ledge
The mantel was a simple ledge in the wall. The ledge hung out over the side of the hill. The ledge prevented him from getting over the obstacle.
In Pokemon Pearl, the Sea Incense can be found on Route 204. But you must have the HM Surf in order to receive it. If you Surf in the bottom-left corner of the route, the item is at the ledge at the bottom.