Latvian President Valdis Zatlers addresses the ceremony.

Latvia celebrates its National Pavilion Day on October 21 with a piano show by Vestards Simkus at Expo Center.

The Latvia Pavilion in Zone C has the theme of "Innovation City of Science and Technology."

Visitors can participate in an interactive quiz using touch-screens to learn more about the European country.

With depictions of forests, sea, land, sky and wind, the Latvia Pavilion shows its beautiful natural environment.

There are three turbines on the roof of the pavilion and a show is staged every day at 7:30pm.