What can I do with the train poster at the Travel Agency?

Look closely at it.

Tapping it will open a flap and reveal a colorful maze underneath.

If you haven't yet opened the box in the Post Office, come back after you've done it.

You should now have small train TRACK tiles in your possession.

Can you guess where they might go?

Place the train track tiles on the maze portion of the poster in the Travel Agency.

Tap each tile to select it, then a new position to move it to. Or select it and tap it again to rotate it.

Use the tiles to make an unbroken path through the maze.

The colors underneath the tiles will light up slightly when you've solved it. Take note of the color SEQUENCE revealed.