where?
Panathenaic Stadium
1896 Summer Olympics
The opening ceremony was held in the Panathenaic Stadium on 6 April, during which most of the competing athletes were aligned on the infield, grouped by nation. 
who took part in the modern olympic games Fourteen nations; all European, and 241 athletes (all males) when was this? From 6 to 15 April 1896 where did it take place? Athens, Greece which were the venues? Panathenaic Stadium, Marathon, Bay of Zea, Zappeion, Kallithea, and Athens Lawn Tennis Club was there an opening ceremony conducted? Yes
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1896 Summer Olympics [SEP] Introduction
The main venue was the Panathenaic Stadium, where athletics and wrestling took place; other venues included the Neo Phaliron Velodrome for cycling, and the Zappeion for fencing. The opening ceremony was held in the Panathenaic Stadium on 6 April, during which most of the competing athletes were aligned on the infield, grouped by nation. After a speech by the president of the organising committee, Crown Prince Constantine, his father officially opened the Games. Afterwards, nine bands and 150 choir singers performed an Olympic Hymn, composed by Spyridon Samaras, with words by poet Kostis Palamas.