Does a place where someone died carry energy or magickal power? I heard that a place where real witches(NOT those who confused just because they were tortured) were burned or killed carries energy.
I believe that the location of someone's death still carries their energies. The energies that were left behind when the physical body perished. This is why, I believe, you can be walking around and suddenly feel your emotions being shifted in various directions. You're influenced by the energies that you've encountered.
Yes theoretically a persons energy still might remain behind after their death and infuse a place or object. Especially if the person was very attached to the said place or object. Also if the death was particularly violent or traumatic. This is how psychics get feelings about places ect. The psychic is connecting to or touching the energy left behind by a person ect.
Yes the energy of a deceased person often remains. This energy can, like any other, be used and absorbed. It is this energy that necromancers often find very interesting.
A place where anyone is killed contains some sort of death energy. And like stated above me, such forces are normally attuned with for the sake of necromancy/necromantics
Any place where high amounts of emotions were displayed, like any violence, constant arguing etc, negative energy will stay in that place, but a good cleaning and re-decorating will cure that.
If they had enough energy in life that energy had to go somewhere and as such its pretty common for sites of torture or death of those with it are extremely rich with energy.
On the other hand places where large number of people where tortured and/or killed will also have a fairly large amount of energy.