Mens-hairstyle.com is a great place to start looking for European men's hairstyles. This is an online database that is updated all the time. The site displays trendy, up-to-date pictures on the most popular hairstyles from all over the world, although their main focus is European hairstyles.
Another good website is ukhairdressers.com. Ukhairdressers is a website based out of Britain that also follows popular trends in European hair. The website is a great database of fashion haircuts complete with pictures. The hairstyles are categorized by type and year. It allows you to see which hairstyles are fashionable this year as well as from years and seasons past. These two websites provide the most comprehensive databases of European men's haircut pictures on the Internet as of 2014.
You can visit other sites, such as GQ.com and Pinterst.com, where it's possible to find great hairstyles for men; however, Men-hairstyles.com and Ukhairdressers.com will provide you with a bigger selection and more variety. Both websites are updated frequently, so if you don't see something that you like right away, you can check back in a few days or weeks, and there will likely be something new one these sites that is currently fashionable in European hair.