No, not web-sites. These are physical places owned/maintained/built by religions, and they are bloody creepy. I found this on Weirdworm.com, so if you want to see all the pictures you'll have to go to their article, but I'll post a few here.
This is from a Cathedral in Italy. The skulls are all of Christians who were beheaded when they refused to covert to Islam when the Ottoman troops invaded. The religion of peace hmmm......
Skulls and bones? Chandeliers? This is the kind of thing I'd expect from shamans in hunter-gatherer tribes (well, perhaps not as detailed) but this fine example of creepiness comes from a Christian chapel in the Czech Republic.
This is the mummified corpse of Saint Zita which, along with many other similar mummified saints can be found on display all over Italy. Saint Zita herself is on display in Lucca, Italy.