The signals we place in and around our landscape shape our own and any visitors sense of invitation.
One of the favorite gardens that I have designed fills the entire front yard of a simple Cape Cod house on a perfectly flat lot. There is no lawn. The fieldstone wall I built sinuously encloses the space between the street and the house and is filled with trees, shrubs and perennials.
An interior path crosses through this garden and winds around to the more private back yard. This exuberant garden is what walkers and other passersby see and it reflects the community-involved personality of the owner. It is an invitation.
Our other senses are also attuned to signals of invitation. Sound, smell, and texture can create inviting spaces.
As a side note: contained fire and food are always an invitation... so is a mystery, like a clock face hanging in the sky like a full moon.