This city was originally founded to protect the Great Marsh. It has grown naturally over the years. The Gym is a good example of the abundant water resources available to the city. There is a lookout that affords views of the Great Marsh. The gates to the Safari Zone are also here.
Pastoria City (Japanese: ノモセシティNomose City) is a city in the Sinnohregion. It is also the home of the Move Reminder, the Scarf Guy and the Sinnoh region's Safari Zone. It is a city on the edge of a giant swamp, known as the Great Marsh. The marsh was once part of the sea, which drained away over time leaving the marshland. There are rare Pokémon only found in the swamps. The Great Marsh keeps the weather cool in the summertime, making it an ideal town for Water Pokémon. Croagunk is one of the rare Pokémon that can be found in the swamp in Pokémon Diamond, Pearl, and Platinum.
The Great Marsh is an area located right to the north of Pastoria City. It is the main attraction of Pastoria City that gets many visitors and Trainers coming from around the area. The Great Marsh contains some Pokémon that cannot be found elsewhere in Sinnoh. It is filled with marshy areas, which are inhabited by wild Pokémon. Much like other Pokémon preserves in Kanto and Hoenn, the Great Marsh features a Safari Game in which Trainers pay 500 for 30 Safari Balls and a limited amount of steps (500) to catch as many Pokémon as they can. When a wild Pokémon appears, no Pokémon may be sent out to battle it: catching Pokémon here, as in all Safari Zones, requires sheer luck. There are four options in the battle screen: Throw a Safari Ball, throw Bait, throw Mud, and run away. Throwing Bait makes a Pokémon less likely to run, but makes it harder to catch; while throwing Mud does the reverse, making it easier to catch but more likely to run. Each day, a special type of Pokémon which can only be found on one day, will change, therefore, to get a new set, players must wait a day. These Pokémon will appear randomly in one of the six areas, some may not appear for a while, while others appear several days in a row or in multiple areas on the same day. Some may not appear until after getting the National Pokédex. The only way to tell which changing Pokémon is available in the areas for the day is to use the lookout upstairs from the entrance.
The Move Reminder allows Pokémon to relearn any move that they were able to learn at an earlier level than the one they are currently at, or ones from that level. Certain Pokémon have moves that may only be obtained in this fashion. The Move Reminder resides in a house northeast of the Poké Mart and will teach a Pokémon a move it could have previously learned but has not, in exchange for a Heart Scale. These may be obtained from the Underground, from the man in the Pokémon News PressPt, or from wild Luvdisc after the National Pokédex is acquired.
The Scarf Guy lives in Pastoria City, in the house nearest to the Route 213 exit. The Scarf Guy checks a Pokémon's condition to see if it is worthy of a Scarf. If the Pokémon's condition is at its maximum value in an area, he will give out the corresponding Scarf to that Pokémon. If not, he will tell the player to improve its condition with Poffins. The Scarf Guy lives with his sister and a Pachirisu. His girlfriend is the Massage Girl in Veilstone City, whom he keeps in contact with through mail, which he lets Pokémon deliver.
Ash and his friends first arrived in Pastoria City in Cream of the Croagunk Crop!. Ash's Gymbattle was pushed back because Gym LeaderCrasher Wake was judging the Pastoria Croagunk Festival. The city's residents honor Croagunk as guardians of the Pastoria and the Great Marsh, with the city featuring a temple complex dedicated to the Toxic Mouth Pokémon. Each household raises one Croagunk with great reverence and care, and each year, all people gather at the festival to choose the Croagunk champion of the year. The winner receives a crown encrusted with a beautiful diamond and pearl. Nurse Joy's Croagunk was given the honor after beating Team Rocket, defeating the defending champion Hamilton.
The Pastoria Great Marsh is nearby. It is a vast area filled with long grass, mud and interconnected lakes, and is home to many wild Pokémon. Local station chief Carny operates the railway that runs through the Marsh.
Southeast of the city, there are two ships, but they have no known use for transportation.
In Platinum, if the player stands behind the Croagunk Wall with the player's head sticking out of it, a wild Croagunk will appear, cry out, and walk into the Great Marsh building.
Standing right outside the Move Reminder's house is a man who claims to be standing "smack-dab in the middle of town." However, according to the map, he is placed four steps down and five steps to the right of the true center of town.
Upon arriving in Pastoria, a Team Galactic Grunt will refer to the player as a "little bugger". Despite the game being acceptable for "Everyone", "bugger" is an expletive in some parts of the English-speaking world. This line was removed from the European release.