This next installment of "If Walls Could Talk" will be the Petworth watering hole, The Looking Glass Lounge. This is one of my favorite places for a Sunday afternoon beer, especially in the warmer months, out on their back patio. I imagine the place will be packed this evening, and now you guys have another interesting conversation topic ... what's the story of the building inside which you're drinking beer? So, let's look into the history of the building at 3634 Georgia Ave. NW. I should also add that two businesses occupy the top floor of the building -- Fission Strategy and Big Window Labs.