A wearable computing device includes an input device, a global positioning system (GPS) sensor, an inertial measurement unit (IMU), a camera, and a memory that is designed to store a database of landmarks and corresponding locations. The device includes a mobile processor that is designed to receive first user input indicating that the user is traveling from a starting location to a destination location and second user input indicating that new landmarks are present. The processor is designed to determine locations of the new landmarks based on the current location, the inertial measurement data, and/or the detected image data. The processor is designed to update the database to include the new landmarks and corresponding locations. The processor is designed to update the database to include an ordered list of landmarks including the new landmarks in order of their appearance from the starting location to the destination location.