“It looks amazingly shiny without the 50 years of grime,” notes the reader who late last week snapped these photos of the former Houston Post building at 4747 Southwest Fwy., tucked into the lifted right armpit of the I-69-610 intersection. The brutalist main building of the 7-building campus, designed in 1970 by Astrodome architects Wilson, Morris, Crain, and Anderson, is being powerwashed — with a significant portion of the work complete just in time for this week’s heavy rains.