Truly unique content is hard to find? I don't think so.
Browse around the Open Directory and you'll find a feast of it. We have listed hordes of museums, libraries, archives, schools and universities. We can lead you to thousands of churches, cathedrals, chapels, temples, mosques and synagogues. Officialdom abounds, with sites of local and national governments, police forces, embassies and all kinds of other bodies. Then there are masses of charities, hospitals and clinics.
If you follow a sport, you're in luck, because we have oodles of local and national teams, clubs and individual sportsmen and women. Or if art is your passion, there are masses of artists and galleries. Music? We're pulsing with it. The sites of bands and artists are there in droves, not to mention a few of the critics. Newspapers, magazines, Radio and TV stations, cinemas, theatres - they may have a lot in common, but each is unique.
I could go on and on. I haven't even mentioned some of my favourite categories. But you get the idea. We are never short of sites with unique content.