Still one of the most popular tourist attractions in Athens, the stunning Panathinaiko Stadium has undergone many transformations throughout its long history, eventually becoming the home of the first modern Olympic Games which took place in 1896, and is still the only stadium in the world built entirely of marble. . This stadium takes the shape of a parallelogram with a narrow entrance and space for spectators on the other three sides, and attracts large numbers of tourists interested in history and archeology.