Congress infrastructure (hall capacity) and flight availability on destinations listed here enables the hosting of a congress for up to 2,000 attendees. In the field of congress infrastructure some especially great progress has been made by a number of the destinations, such as Poland and the Baltic countries, where a number of brand new congress centres can be found today. Among the destinations there are also those where the infrastructure is in place, but is in need of extensive renovation, or those that are still waiting for a proper and dedicated convention centre to be built, such as Sarajevo or Zagreb. For this category flight availability is an extremely important criterion and is where major differences and significant competitive advantages can be made.