Location of Treasure Chests in Baron
All of the treasure chests that you can pick up in Baron at the start of Final Fantasy IV are listed on this page. If you'd like to return to Chapter 1 of my Walkthrough then follow the link provided.
To get to the Tent and Hourglass (shown below) you'll first need to make your way down the stairs that lead into the water. They're found in the northeastern most portion of Baron.
Baron Treasures #2
In order to reach the forested area with the two Phoenix Downs as well as the Gold Needle you'll need to enter an invisible wall just north of the old lady in the northeastern most portion of the town. Use my screenshot above for guidance on where to enter.