Complex sentence: Henrico's county seat was also moved from Varina to Richmond in 1752, to a building still extant at present-day 22nd and Main Streets nearby, where it remained until the 1970s.
Split into simpler sentences: Henrico's county seat was also moved from Varina to Richmond in 1752. The county offices were moved to a building still extant at present-day Twenty-second and Main Streets, where they remained until the 1970s.