In the corner you can see the narrowest house in Warsaw and Europe and one of the 10 narrowest in the world.
In the 17/18th centuries the tax from the house depended on how wide it was, so this was the reason they built rather high, but narrow buildings :)

The bell was brought to this place from the National Museum in 1972.
Originally casted in 1646 by Daniel Thiem, was intended for the temple in the town of Jaroslaw, but because of production fault it's toll probably never sound.