A tour puzzle is a puzzle in which the player travels around a board (usually but not necessarily two-dimensional) using a token which represents a character.
Sometimes (as in mazes) the player him/herself makes the trip. Sometimes the player has more than one token with which to travel. Sometimes certain objects have to be found and/or retrieved on the way.
Often there is a given start and finish position for the player's token. Some tour puzzles demand that certain points on the board have to be visited on the way. Maze puzzles are often of this type.