Tonight, I added an interior area - the apothecary shop - to the environments available in the Sacraments 3D Tech Demo. If you open the door in the first building on the right, you can enter the apothecary shop, where eventually you'll be able to purchase healing draughts and Tanis leaves to aid you on your journeys. Here's a screenie:
Unlike many RPG's out there, the apothecary shop's size on the inside matches its size on the outside. This makes it feel a little small inside, but there will be larger interior spaces in the game besides this one (like the caves, for example).