Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Yab Yum was one of the best-known brothels in Amsterdam, the Netherlands. Located in a 17th century canal house on the Singel, it mostly catered to business men and foreign visitors. A second Yab Yum operated for a while in Rotterdam, but has since been closed. In January 2008, the city of Amsterdam closed the brothel by revoking its license, alleging that it was being used for criminal activity. As of 2005[update], the entrance fee was 70 euros, which included a drink. Sex for one hour costs 300 euros, but typically required in addition the purchase of an expensive bottle of champagne.