Recall a place that you loved, or imagine an environment that seems magickal to you. Envisage it very strongly.
Now put something there. You might like to plant a shrub of tree, or to mentally place a beloved object on the spot.
Return to your sanctuary the following day. Look at the whatever you place there. Whenever you wish to cast a spell or ponder the higher aspect of life, see and feel yourself in this place.
The connection to your sacred space will grow as you do and soon and soon it will begin to have am life of its own.