The painting is "Blindman's Buff" (or "Blind Man's Bluff") by Jean-Honoré Fragonard. Peter proposed to Bridget in front of this painting at the National Gallery of Art in Washington, DC!
Grab a coffee at Agora or a drink at Anvil Bar, both just a few blocks away from the church! Or, sit at Bayou and Bottle in the Four Seasons lobby for a pre-cocktail hour cocktail!