Street sign indicating ban of nitrous oxide use near the Poelestraat in Groningen...

Sign stating "forbidden to use nitrous oxide" in the Poelestraat in Groningen which is also known as the main nightlife area with bars, pubs, and clubs...

depends largely on its student population, with the Grote Markt, Vismarkt, Poelestraat and Peperstraat crowded nightly, most bars not closing until five in...