ISNA|Mehdi Motamed: The 17th WFTGA International Convention is to open in Tehran on January 28, two days before the opening ceremony 141 of tour leaders from 21 countries of the world, namely Austria, Germany, Spain, France, Greece, Denmark, the UK, Italy, Latvia, Portugal, Sweden, Serbia, Belgium, the USA, Russia, the Czech Republic, Slovenia, Estonia, Japan, Singapore, and Peru visited the historic monuments of Qazvin city which was the first capital of Safavid dynasty before moving the capital to Isfahan.