The following list of locations can be found here.
“The Airway is obviously Bowser's airway in Mario and Luigi: Bowser's Inside Story. The Dark Star...Airway
“Princess Peach's Castle is where Princess Peach lives and rules over the kingdom with her loyal...Princess Peach's Castle
“Cavi Cape is a minor area in Mario & Luigi: Bowser's Inside Story and is where Fawful put Bowser...Cavi Cape