Inside the ship, their main central area was called the "Centrum". It was open from the 4th up thru the 9th floors with railing all around each level, allowing the person to look up or down. There were also 2 elevators at one end of the area whose wall facing that area was clear glass. I think I took this photo as I was on the elevator going up/down. On the 4th floor of the Centrum area they had a baby grand piano and there was usually professional musicians playing. There were also a few small dance floors on the 4th level that passengers took advantage of.