I might add that Charles Darwin's burial place is inside Westminster Abbey, London---quite near to Sir Isaac Newton.
I take my overseas guests to the Natural History Museum because it all makes sense except for the souvenir shop. The bus journey makes it a kind of pilgrimage.
Are there any sites with strong association with G. B. Shaw, H. L. Mencken or Robert Ingersol? They deserve some “pilgrims” and gift shops. The Jefferson Memorial would come close - I've always suspected that Jefferson was more of an Atheist than a Deist.
There is a tour, if not a pilgramage for "The Great Agnostic": Robert G. Ingersoll. Ingersoll was a 19th Century champion of Freethought and famous orator and critic of religion. He toured the US and delivered over 1,300 speeches on this topic as well as women's rights, civil rights, (and DC voting rights).
Ingersoll lived and worked in Washington, DC for 7 years working as a lawyer where he argued cases before the Supreme Court, lobbied Congress and consulted with Presidents. He is buried across from DC in Arlington National Cemetery.
You can a link to a woalking tour on the blog on secular DC activities http://secularhumanist.blogspot.com/2011/04/earthy-scientific-and-t... and also
-epic blind rationalist, Id like to visit his statues sometime in the future
"There are two types of men, intelligent men without religion and religious men without intelligence.
Do not suppose the statements of the prophets to be true; they are all fabrications. Men lived comfortably till they came and spoiled life. The sacred books are only such a set of idle tales as any age could have and indeed did actually produce.
-Believed that is was better to not bring children into the world if your area was ruled by religious people.