Event date: 
Monday, September 23, 2013 to Friday, September 27, 2013

Drupalcon is the biggest Drupal related event. Its an international educational event that brings together the people who use, develop, design, and support the Drupal platform.
Drupalcon Prague will be the biggest event organized in Europe this year. DrupalCon isn't just a conference, it's an experience. Each day features events for Drupalistas of every level to share, learn and explore.
Last year the DrupalCon of Europe was organized in Munich with 1700 attendees. 3 of us were there. Check out some of our pictures.

Our contribution: