the best places to cast a spell

The place in were you will cast a spell must be.
A place in where you will feel comfortable.
Outdoor places in woods and beaches are good places because there you are in contact with the elements of the universe and the powers which gives life to the nature.
Also ruins of ancient pagan temples are good places to cast a spell.
Thus places are places with lot of energy around.
Don't forget that some people in the old times choosed to build there temples there.
and they did it for a reason ;)
good luck with the searching.