Preheat your oven to 350°F (175°C) and grease two 9-inch round cake pans.
In a large mixing bowl, cream together the butter and sugar until light and fluffy.
Add eggs one at a time, mixing well after each addition.
Stir in the lemon zest and lemon juice.
In another bowl, combine the flour, baking powder, baking soda, and salt.
Gradually add the dry ingredients to the wet mixture, alternating with buttermilk.
Gently fold in the fresh raspberries, being careful not to break them.
Divide the batter evenly between the prepared pans.
Bake for 25-30 minutes, or until a toothpick inserted in the center comes out clean.
Allow cakes to cool in the pans for 10 minutes, then transfer to wire racks to cool completely.