Wherever you go, there you are—and it matters. This is the fundamental premise of environmental psychology: We are always embedded in a place. In fact, we are always nested within layers of place, from a room, to a building, to a street, to a community, to a region, to a nation, and to the world. If, instead, we happen to be in a vehicle, an urban park, on the water, or in a wilderness, we are still somewhere. Person-place influences are both mutual and crucial. We shape not only buildings but also the land, the waters, the air, and other life forms—and they shape us.