Plans for a Newcastle bid for 2017 have been postponed. Current plans are for a bid for Expo 2022. Newcastle 2017 Costly Newcastle Bid on Hold - news article, 14 November 2011

Copenhagen 2022 Danish Capital Aims for Expo 2022 - blog, 16 March 2010

In recent decades, Spain has hosted the larger "sanctioned" Expo '92 in Seville and the smaller "recognized" Expo 2008 in Zaragoza. Canary Islands 2023 Canarias2023.org - official site El Parlamento Respalda la Candidatura a la Expo 2023 - news article, 23 October 2009 (translation in English via Google: Parliament Endorses the Candidacy of Expo 2023)