Peppatown Central Fountain is a magical fountain in the centre of Peppatown. Emily Elephant pushed Peppa down this fountain and sent her to the real world. Its only appearance is in "Peppchanted".
In JDoesWikia's Fanon and Mateusz11113's fanon, the Peppatown Central Fountain is not the only way to enter the real world.
Peppatown Central Fountain is a magic fountain in the middle of Peppatown which leads to the real world. There is a portal leading to the real world hidden in the water.
In Eggs, it is in the Peppia National Forest.