Traveling to North Korea as a tourist is only possible as part of a guided tour. Independent travel is not permitted. If you wish to visit the Puyong Pavilion, located in the city of Haeju, you must arrange your trip through a tour operator that has authorization from the North Korean government.
Please note that due to the complexities and sensitivities of traveling to North Korea, this information can change without notice. It is always best to consult with an authorized tour agency and your country's travel advisories when planning your trip.