You’re most probably going to walk through this street, since it is quite central. Yet, some may still miss it, because there is not much to do here except admire the old and beautiful architecture. But that’s the thing. This street is a must see place, because the buildings here date back to the end of the 19th and the beginning of the 20th century, and there is a lot of history here. Besides, there aren’t many such old buildings left in Yerevan.
But there is much more hidden in this street. One must enter the building on Hanrapetutyan 32 (a small one-storey building between two-floor buildings with exquisite decoration and a hard-to-miss design). The entrance is from the neighboring building on the left. While the corridor can be slightly messy, the magical room is to the right. The interior here is a mix of Persian and Armenian decorations. There are many more decoration on the walls, that despite the small room, it may take some time while you enjoy all of the decor here.
Currently, this room is the residence of Alliance for the Preservation of Historical Monuments (here’s a link [Youtube] that will help you find the building). If you want to see inside, go there on work day afternoons.