Wonder Pens has a variety of brands including Lamy, Platinum, Edison, Pilot, Palomino, and more! Perfect especially if you're looking for Japanese stationery like Superior Labor, Midori, and Life Stationery.
At the time I visited, there was a typewriter show - with actual restored typewriters you could try out. It was so cool. Even my brother, who has little interest in pens and stationery, thought it was a really interesting place!