On a clear, breezy evening on any given opening exhibition night, glowing lights emanate into the street from Meridian Gallery, revealing an exquisite exterior as well as an equally timeless and beautiful interior on the 500 block of Powell Street. The 100-year-old Victorian building certainly perseveres through the city’s constant evolution. Architect C.A. Meussdorffer designed the structure in 1911, and it remains the only single-family home left in such a bustling and highly trafficked area of San Francisco. Even though…