The last time I was at Bramall Lane, the ground only had three stands. The other side was open with a clear view to the cricket pavilion In the far distance. Apparently Yorkshire County Cricket only used to stage four matches a season in Sheffield. The inevitable happened and Yorkshire were evicted and a fourth stand was eventually built.
It was a scary place to go at times. Apparently visiting supporters (probably United) perfected the art of throwing bottles at the low overhanging purlins so that they would shatter all over the home supporters below.
I went to a number of matches there and still share a degree of respect for the Blades‘ support. They are generally decent fans.