Persians (Iranians) in Amsterdam celebrated the longest night of the year which is called YALDA (Persian Winter Solstice Celebration).
The event was organized by Persian Dutch Network in The Netherlands (Dec. 2011)
Source: www.PersianDutch.com
Watch also YALDA 2010 in Haarlem, NL:
Video: PERSIAN DUTCH NETWORK
www.PersianDutch.com