Pioneer Day

Pioneer Day is a festival celebrated annually in the town of Gravity Falls, Oregon. It celebrates the town's rich history and culture. During the celebration, it is common for people to dress up and act as if they were really in 1863.

Pioneer Day Festivities
Many festivities are included with Pioneer Day to make it really seem like 1863. Mabel was impressed at seeing a candle dipping booth, and Dipper wanted to go gold panning with Old Man McGucket and a few other people there. When Grunkle Stan harasses the police for acting a little crazy to him, they shove him in "ye stocks". There is also a tomato booth where some random people threw tomatoes at Grunkle Stan for writing "YOU STINK!" to Pacifica on a notepad.

History
Grunkle Stan accidentally drives into the fair the summer, he is taking care of Dipper and Mabel, his twin nephew and niece. Though he expresses distaste for the fair, Dipper and Mabel find it intriguing.

The twins look around the fair for some time, before Pacifica Northwest, the great-granddaughter of the supposed founder, makes a speech. She asks people to introduce themselves, and Mabel does so. However, she is mocked by Pacifica.

Disheartened, she and Dipper walk away. Dipper looks through the book 3, and finds that Nathaniel Northwest may not be the true founder of Gravity Falls, prompting the twins to search for the true founder, Quentin Trembley.