Complex sentence: The centrepiece of the festival is at Pak Tai Temple where are the "Bun Mountains" or "Bun Towers" (包山), three giant 60-feet bamboo towers covered with buns.
Split into simpler sentences: The centrepiece of the festival is at Pak Tai Temple where the "Bun Mountains" or "Bun Towers" (包山) stand. These are three giant 60-feet bamboo towers covered with buns.