Since 2008 the online Journal of Maps has been giving an award to the “best map” published in its virtual pages; 2015’s winner is a map of municipalities in the Czech Republic created by Vít Pászto, Alžběta Brychtová, Pavel Tuček, Lukáš Marek and Jaroslav Burian for their article “Using a fuzzy inference system to delimit rural and urban municipalities in the Czech republic in 2010.” Past winners are available for purchase as prints (of various sizes). [via]
The Journal of Maps launched in 2005. I believe it was open-access at that point; since coming under the umbrella of Taylor & Francis in 2012, it no longer appears to be.