Niche Stock Image Sites
Images of Easter and Christianity themes
The world's leading source of religious imagery
purchase pictures of "Jewish way of life"
Religion @ istockphoto
browse for travel themed images at istockphoto
Religion @ bigstock.com
Travel search results from their microstock collection
A really nice collection of Christian CC0 images, categories for bible study, prayer, crosses and so on.
The images above are priced from around $1