Christ Church was founded in 1695 and the current building dates to the 1720s — one of the finest colonial-era churches in America, with a white Georgian steeple that was the tallest structure in colonial North America for fifty years. Fifteen signers of the Declaration of Independence worshipped here, including George Washington (in pew 58), Benjamin Franklin, John Adams, Betsy Ross, and Robert Morris. The pews are numbered and marked; you can sit where they sat.
The church is still an active Episcopal congregation that also functions as a historic site, and the combination gives it an authenticity that preserved museums can rarely match. The burying ground on Arch Street, a block away, contains Franklin's grave — a flat marble slab under a chestnut tree, perpetually covered with pennies thrown by visitors following the American custom of leaving a coin for luck. Franklin himself would have found this absurd and amusing in equal measure. The church offers guided tours and Sunday services that are open to all.