The arid Route 4 connects Castelia City in the south to Nimbasa City in the north. The constant sandstorm has slowed the construction of a road through the desert, leaving Trainers no choice but to trek through the deep sand. Gather up the items here and head off into the Desert Resort to the northwest.
The Desert Resort is a huge desert with an ever-raging sandstorm. To the north, along the river's edge, are the Relic Castle and the Relic Castle Tower. A group of ancient Pokémon statues quietly watch over the castle entrance. If you get into trouble, talk to Doctor Jerry near the desert entrance to heal your Pokémon. Take some time to train here before reaching the Nimbasa Gym.
The Relic Castle is an ancient ruin almost completely buried beneath the sand. Quicksand has eaten away at the unstable floors, and anyone trying to run through it is caught up and dropped to the floor below. At this point in the story, you'll only be able to reach the first two floors, as the rest are still buried under the desert. You'll be able to explore the other floors later on, after the Worker here clears out the rest of the sand.
When they leave, the Day-Care Man gives you a Bicycle as a token of his gratitude. From this point on, you can now leave up to two Pokémon at the Day-Care on Route 3.
Meet up with Bianca
After rescuing the Day-Care Man from Team Plasma, Bianca shows up and mentions all the exciting attractions that Nimbasa has to offer. She heads off to the Pokémon Musical, where you'll catch up with her a little later.
After completing the main story, you can visit the Battle Institute to take a Battle Test. The test consists of five consecutive single or Double Battles, and you earn a rank and score for completing all five.
Visit the house north of the Battle Institute and talk to the blue-haired guy inside. He hands over HM04 (Strength), which lets your Pokémon shove large boulders around.
Big Stadium and Small Court
Big Stadium and Small Court are the major sports venues of the Unova region. The stadium hosts baseball, soccer, and football, while the court hosts tennis and basketball. The players double as Trainers and can be battled daily, except when a game is in progress. The number of Trainers and the levels of their Pokémon increase as you earn more Badges. Keep yourself fighting fit by visiting every day.
When you try to enter the Battle Subway, a woman steps out of the building and hands you the Vs. Recorder. This device lets you record a video of a battle in the Battle Subway, or a Link Battle with a friend.
In the Battle Subway, you can get on a real winning streak. For every seven Trainers you defeat, you'll gain Battle Points, which can be exchanged for useful items. The more Trainers you defeat, the more BP you can collect.
The Musical Theater is where the Pokémon Musical is held. Bianca is waiting outside the building for you, located on the north side of the city. The two of you meet the building's owner inside, who gives you each a Prop Case. After Bianca leaves, speak to the girl in white near the PC to get TM49 (Echoed Voice).
When you leave the Musical Theater, you'll see Bianca talking with her dad. He has been worrying about her welfare, and has come to take her home. Nimbasa's Gym Leader, Elesa, can't stand the fighting. She intervenes and convinces Bianca's dad that his daughter will be fine.
The Nimbasa Gym is located in the amusement park on the east side of the city. When you first visit the park, you'll run into N. He asks if you are looking for Team Plasma, and suggests that the two of you ride the ferris wheel to find them. It is here that he reveals himself as Team Plasma's king. He has been working with Ghetsis to liberate Pokémon. When you climb off of the ride, he battles you to buy time for the grunts' retreat.
Nimbasa City Pokémon Gym Leader: Elesa The Shining Beauty
The Nimbasa Gym specializes in Electric-types. Fitting with the city's focus on entertainment, the Gym features multiple roller coasters that challengers must ride to reach the Gym Leader, and a series of switches to change the cars' direction.
An employee of the Battle Subway lives in the southeast house, and will give you a lost Rare Candy the first time you talk to him. After seven consecutive battles on the Battle Subway, he will give out a number of vitamins, Max Revives, or Max Elixirs for each set of seven victories at the Battle Subway that day, capping at ten per day.
Anville Town is known for its connection with locomotives. Every day, a different train engine can be found on the turntable, most of them a part of the Battle Subway. A Worker on the bridge will explain a bit about each one.