The decision was confirmed at this year's event in Amsterdam by the mayors of Amsterdam, Athens, Berlin, Bratislava, Brussels, Bucharest, Budapest, Copenhagen, Dublin, Helsinki, Lisbon, Ljubljana, London, Luxembourg, Madrid, Paris, Prague, Riga, Rome, Stockholm, Tallinn, Valletta, Vienna, Vilnius, Warsaw and Zagreb.
Commenting on the decision, Riga mayor Nils Ušakovs said: "In addition to issues such as employment, transportation, public utilities and others, which the summit traditionally focuses on, in Riga we are going to talk about innovation, IT technologies in urban management and air quality."
Aspects of the refugee crisis were also likely to be on the agenda, Ušakovs indicated.
He also tweeted himself officially inviting his counterparts to Latvia.
ES galvaspilsētu mēru samita preses konferencē aicinu visus uz nākamo samitu, kas 2017. gadā notiks Rīgā. pic.twitter.com/45MTLsnPIv— Nils Ušakovs (@nilsusakovs) April 22, 2016
ES galvaspilsētu mēru samitā Amsterdamā pārliecināju kolēģus - 2017.g samits notiks Rīgā. Pirmo reizi Austrumeiropā! pic.twitter.com/kC7Pw6LO7x— Nils Ušakovs (@nilsusakovs) April 22, 2016
The Latvian capital will be the first in Eastern Europe to host the event. No exact dates or financing details have yet been released.
However, Ušakovs overshadowed the announcement by also provoking a storm of protest on social media while attending the Amsterdam event. On April 22 he posted a cryptic cartoon commentary on a recent estimation of the costs of the Soviet occupation, comparing it with inserting a stick into the wheels of a bicycle.
Par 185 000 000 000 € kompensāciju. pic.twitter.com/ETp2cSp41h— Nils Ušakovs (@nilsusakovs) April 22, 2016
The cartoon drew numerous accusations that he was denying or trivializing the Soviet occupation period.