It's a long time since I've been to the British Museum in London. It seems they now have a permanent "Enlightenment" exhibition in the former King's Library. (Last time I was there it was fenced off for alterations.) There's an online tour:

http://www.thebritishmuseum.ac.uk/enlightenment/en_tours.htm

I'll definitely go there next time I'm in London. Oddly I found this link on the Internet Infidels discussion forum, an American site!

Modern America seems to have lost sight of the principles of its founding fathers like Tom Paine and Thomas Jefferson, whose views on religion were far more radical than any present-day politician seems prepared to express.