It ranks second among the European cities mentioned in the list, behind Poland's Gdansk.
"The Latvian capital, the largest city in the Baltics, is a fascinating mixture of proud Latvian tradition and influences of the various countries that have occupied it. Independent once again since 1991, Riga's Art Nouveau center has won it UNESCO World Heritage Site designation. Opened up to mass tourism with the advent of budget air travel, Riga's Old City and its abundance of bars and restaurants can be explored on foot. The New Town is easily reached by an efficient and modern bus and tram network," the website says.
It lists Old City Riga (Vecrīga), as well as Vermanes Garden and the infamous KGB building (Stūra māja) as must see destinations.
Previosuly Riga was found to be the best-value Christmas market on the continent in a survey by the UK's post office, beating off stiff competition from stalwarts of the Christmas market scene such as Munich, Prague and local rival Tallinn.