gorky park in 1998. after the communist era, it became a gaudy amusement park and fell into disrepair. they have brushed away the trash. >> visitors to the park are younger now. the place is more energetic and vibrant than before. the part is like a stage for ideas. a kind of laboratory. others show up and join in. >> ice skating in the winter. skating in the summer. officials say since the renovation, 100,000 people stopped by every weekend. >> back to the olympics. after setting almost two dozen records in swimming, but so- called super suits were banned. >> six world records and counting. some have wondered if doping maybe playing a role. >> swimmers from lithuania and china have scored world-record times in these olympic games. they did not have the help of the high-tech swimsuits of past years. many are wondering if doping is buoying their success. >> and performance enhancing substances? >> no, never. >> both swimmers' tests are-. only three athletes have tested positive so far. non-were medal cont