Complex sentence: The former Hotel Roosevelt, located on Adams Street in downtown, is still standing, and memorials are still held to remember those who died in the fire (the most recent gathering occurred in December 2003 for the 40th anniversary of the blaze).
Split into simpler sentences: The former Hotel Roosevelt, located on Adams Street in downtown, is still standing. Memorials are still held to remember those who died in the fire (the most recent gathering occurred in December 2003 for the 40th anniversary of the blaze).