Newtopia

Newtopia is the capital city of Amphibia. It is a giant city where the Newts, for whom it is named, reside. The monarch ruler of Amphibia, King Andrias lives in the city. The population includes other amphibians such as frogs.

The capital was guarded and defended by its own military force known as the Newtopian military, which also commanded the Toad Army; Until the army of toads' 3 leaders from distinct regions of Amphibia, Captain Aldo, Captain Bufo and Captain Beatrix supported this orchestrated rebellion then the temporary invasion of Newtopia by Captain Grime and Sasha. The rebellion and invasion was unsuccessful. Andrias activated the Newtopia Castle by using the Calamity Box which made the castle float above the city and he uses the castle's energy cannon to destroy North Tower.

Since the events that happen between "True Colors" and "Turing Point", King Andrias used the Calamity Box's technology to reactivate the factories around Amphibia to build up his personal Frobot military force and quickly industrialize some parts of Amphibia in weeks to the point of stripping off natural surroundings with making lots of pollution around the capitial as seen in "Olivia & Yunan".

Appearance
Newtopia appears to bear a resemblance similar to a castle/palace, with turrets and towers being seen in the distance including flags placed at the top of the towers which appear to be shaped like red mushrooms. Likely to be made out of "Newtopian Marble" and possibly gold, the castle is the most massive structure on the show. There is a winding cobblestone path leading to the entrance and the location seems amidst a shallow sea. There is a large golden gate that serves as the entrance and atop Newtopia is a large silver sculpture with a beak-like carving facing upwards.

Newtopia Castle (formerly)
Newtopia Castle is the home of King Andrias, Marcy Wu, and likely Lady Olivia. Now floating above the capitial.

Hemisphere Hotel
First appearing in "The Plantars Check In", the Hemisphere Hotel is an upscale hotel in Newtopia that stands at roughly twenty floors tall. Its first floor is populated with cafés, restaurants, various shops, a fountain, and an indoor Ferris wheel. The top of the hotel features a large see-through dome where the sunset can be viewed through.

Burg
A restaurant that appears in "Scavenger Hunt" that Marcy claims to have the best beetle hamburgers in all of Newtopia. It stands at three floors tall, has two windows on the front of the building, and has outdoor tables for dining.

Coral Park
Coral Park is a location briefly seen in "Scavenger Hunt" that contains pink and orange coral. In its center sits a statue of a newt named Ezra Brackish looking through a telescope. The statue’s head is hollowed out, so those who remove its hat can peer through its telescope. In it, they uncover the word “bring,” painted on the coral as part of the code from the episode.

Museum
The museum is another location Marcy, Anne, and Sprig visit in search of a clue to solve the puzzle in their scavenger hunt.

Sal's Wartwood Style Sandwiches
A sandwich shop now in ruins was formerly operated by Sal, an old friend of Hop Pop Plantar.

Sauce, Inc.
Sal's factory located at 144 Via Gustosa, Little Frogtown, 00155 that makes his special sauce.

Newtopia University
The place home for the highest educated Amphibians and the most protective place in Newtopia (not sure is it more protective than the Newtopia Castle). Sprig was picked to be a student, while he declined the offer, the offer is still open for Sprig.

Colosseum
According to General Yunan and some other frogs in "Toadcatcher", there is apparently a gladiator colosseum in the city where Grime fought in before he rose to ranks as captain.

Newtopia Aquarium
The aquarium that appeared from "A Day at the Aquarium" shows the sea animals and creatures back in Wartwood like river lampreys from "Flood, Sweat & Tears", the kraken from "Lily Pad Thai", Hop Pop's cane from "Cane Crazy", Domino 2 from "The Domino Effect", the cannibal couple from "A Night at the Inn", mudmen from "Anne Vs. Wild", the grubhog from "Grubhog Day", a zapapede from "Taking Charge", and Veggierobo from "Handy Anne". At the Stingray Stage Show, they have stingrays. However, they have water snakes like the one from "Best Fronds".

Arcade
The arcade is located right near Sal's Wartwood Style Sandwiches in "Little Frogtown" where Anne, Sprig, and Polly waited in a line for three hours. But the arcade was shut down after Anne confronted a kid for cutting in front of her, causing all 3 to be banned from the Arcade.

Trivia

 * Newtopia was first mentioned in the Season 1 episode "Fiddle Me This" by Wartilda as a well-known location for a university, but the city is officially shown in the second series episode "Marcy at the Gates". It isn't until the location called Newtopia University makes its first appearance in the episode "Sprig Gets Schooled".
 * It is a 1-month journey from Wartwood to Newtopia by taking the path around the mountains.
 * General Yunan, a female warrior Newt, is from Newtopia and is the youngest commanding officer to achieve the rank of general in the army branch of the Newtopian military.
 * Although a lot of places in Amphibia do not have access to electricity, the Hemisphere Hotel's elevators, indoor Ferris wheel and lights located in the cafés, restaurants with various shops are powered by electricity. Which means Newtopia seems to be the known place to have electricity in all of Amphibia, for now.
 * Coppers being the main currency of Amphibia are also used in Newtopia.
 * While the main language is English inside Newtopia, the Amphibian language is more prominent.
 * Matt stated in Reddit if Amphibia was real, he would love seaside towns like this.
 * In "True Colors", it was explained by King Andrias that the capital, and Amphibia as a whole was extremely advanced more than 1000 years ago, with loads of advanced technology and the Calamity Box as the source of energy powering the whole continent. Yet he also stated his friends were uneasy of Andrias' conqueror ambition, which lead to both his friends leaving him and one of his former friends taking the box away, which led to Amphibia as a whole losing all its advance technology and decreasing into a medieval society with only Newtopia still possessing items such as electricity.

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