Check out the award-winning website Journeywoman (www.journeywoman.com), a "real life" women's travel-information network where you can sign up for a free e-mail newsletter and get advice on everything from etiquette and dress to safety; or the travel guide Safety and Security for Women Who Travel by Sheila Swan and Peter Laufer (Travelers' Tales, Inc.), offering common-sense tips on safe travel.
In Amsterdam, it's safe for groups of women to go around in the city's famed (or notorious) Red Light District -- always supposing they can stomach seeing other women serving purely as sex objects -- but a young woman on her own, particularly after dark, could be subject to at least verbal harassment, and misrepresentation as a "working girl."
Public transportation is usually busy even late at night, so you generally won't have to worry about being alone in a bus, tram, or Metro train. If you feel nervous, sit close to the driver whenever possible.
Holland has long enjoyed a relaxed attitude to exposing nontrivial amounts of the undraped female form -- a recent government DVD, part of a now-mandatory "education" for would-be migrants, portrays going topless at the beach as an integral part of Dutch culture. Far fewer women are actually going without at the beach or in the park these days, and those who do are less likely to be younger women and teens. Catholic Belgium and Luxembourg always were less relaxed about this, and remain so.
