Preheat your oven to 325°F (165°C).
In a mixing bowl, combine the graham cracker crumbs, sugar, and melted butter until well combined. Press this mixture firmly into the bottom of a 9-inch springform pan to form the crust. Set aside.
In another mixing bowl, beat the softened cream cheese with an electric mixer on medium speed until smooth and creamy.
Gradually add the granulated sugar and mix until fully incorporated.
Add the eggs one at a time, mixing well after each addition. Scrape down the sides of the bowl as needed.
Add the sour cream, vanilla extract, orange zest, and fresh orange juice. Mix until the mixture is smooth and creamy.
Pour the cheesecake filling over the prepared crust in the springform pan.
Bake in the preheated oven for 60 minutes or until the center is set but slightly wobbly.
Turn off the oven, crack the door open, and let the cheesecake cool in the oven for about 1 hour.
Once cooled, cover the cheesecake with plastic wrap and refrigerate for at least 4 hours or overnight to fully set.
Before serving, top the cheesecake with whipped cream and sprinkle with additional orange zest for garnish.