Complex sentence: In 1963 the Markham Village Cenotaph (barn and home removed) and Community Centre (including indoor ice rink) was added and in 1977 the Fair relocated to its current site where the four-day fair is held annually on the weekend preceding Canadian Thanksgiving.
Split into simpler sentences: In 1963 the a barn and home were demolished to make way for the Markham Village Cenotaph and Community Centre (including indoor ice rink). In 1977 the Fair relocated to its current site where the four-day fair is held annually on the weekend preceding Canadian Thanksgiving.