Complex sentence: In the early period, RAJUK Bhaban looked like a very simple building but recognizing the historical and architectural importance of RAJUK Bhaban, RAJUK took the initiative to renovate it.
Split into simpler sentences: In the early period, RAJUK Bhaban looked like a very simple building. But recognizing the historical and architectural importance of RAJUK Bhaban, RAJUK took the initiative to renovate it.