People are making lots of money off of posters and books dedicated to interesting doors from around the world. Gorgeous, colorful photographs of doors. Big doors. Red doors. Ancient doors. Doors with graffiti. Wooden doors. Gold doors. Doors to pubs. Doors to thatched-roof cottages. Doors to churches and tombs.
The really interesting book would spotlight the doors of our children. Bedroom doors. Fort doors. Clubhouse doors. My son’s door.