Everyone adores One Piece for its willingness to embrace its goofy aesthetics, from its wacky character designs to the running gags. But beneath One Piece’s quirky appearance and occasional hilarity lies one of the most dangerous worlds in all of anime. At every turn, there’s always something ready to cause the characters’ demise, whether it’s a tyrannical ruler sucking the life from a kingdom or a pirate crew lurking in the shadows, ready to strike. Nowhere in this world is ever truly safe, no matter if one is a civilian trying to live a peaceful life or a powerful warlord caught in the crossfire of a war.

This world is divided into four seas, each with its own threats, from sea kings to weather phenomena. But none of the blue seas comes close to the level of danger found in the Grand Line, a string of countless islands that will have you questioning your existence. Each island is so dangerous that islands like Dressrosa and Whole Cake Island don’t even break into the top ten most dangerous locations in One Piece. But if these islands struggle to crack the top ten, what nightmarish place can claim to be among the most dangerous?

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10

Little Garden Is Only the First Taste of What the Grand Line Has in Store

The Island Where Prehistoric Dinosaurs & Deadly Diseases Await

One of the first islands fans got the chance to experience after the Straw Hats embarked on the Grand Line was Little Garden. From the Straw Hats’ perspective — except for Usopp and Nami — this island was like a playground to explore. But if a regular civilian were to set foot here, they would experience a level of hell they never could have imagined.

This place is truly uninhabitable; at every turn there is a new threat just waiting to snatch one’s life away. This danger could be a prehistoric dinosaur eyeing you for lunch or a deadly disease that nearly took Nami’s life before her journey could truly begin. This island is the very definition of dangerous, and it doesn’t even come close to how horrible the worst the world of One Piece has to offer.

9

Tequila Wolf Is Just 1 of the 4 Bridges to the World’s Doom

A Cold Chance of Slavery Lies at Tequila Wolf

Fans were first introduced to Tequila Wolf after Kuma sent Robin there. The overall atmosphere and tone felt like stepping into an entirely different world than the “goofy, pirate anime” fans have come to know. Here, there were slaves, forced to build a never-ending bridge that had been under construction for over 700 years. Women, the elderly, and even children spent their days constructing this bridge in the freezing cold and were treated harshly along the way.​​​​​​

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But what makes this even more disturbing is that Tequila Wolf is only one of four similar structures, alongside Bourbon Wolf, Vodka Wolf, and Rum Wolf. At first, their purpose was a total mystery, but with the recent revelation that the world is sinking, the pieces are starting to fall into place. These bridges were most likely designed for the Celestial Dragons, a way for them to survive while the rest of the world drowns.

8

Boin Archipelago Will Make You Its Next Meal

Beetles and Plants and Sea Beasts Abound

From the outside looking in, Boin Archipelago looks like another one of the wacky locations One Piece is known for. But that assumption couldn’t be further from the truth after stepping foot onto one of the flower-shaped “islands.” Just like what happened with Usopp, this place will ensnare you in its Forest of Gluttony and feast on you. The islands — if you could even call them that — will literally eat you, as they are actually island-sized carnivorous plants.

There are also countless large insects that will scare the living daylights out of you at just a glance. And this is only what’s known about the island from a quick look at its surface — there are bound to be even more dangers lurking in the shadows that only Eiichiro Oda knows about. But what is certain is that Boin Archipelago is a bottom-tier vacation destination in One Piece.

7

Punk Hazard Gives a Memorable Entry Into the New World

Punk Hazard Allows Trespassers to Pick Their Poison

After embarking on the New World portion of the Grand Line, the first set of islands looked to be as dangerous as fans had ever seen. One of these islands was split into two extremes — one side engulfed in flames, the other completely frozen over. With such harsh weather conditions, this place isn’t inhabitable by any means for ordinary citizens, but things get much worse beyond that.

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​​​​​​If anyone were to come to Punk Hazard while Caesar was conducting experiments, then they would be exposed to toxic air that could kill them. If they survive both the weather and toxic air, they would encounter giant-sized children addicted to “candy” and a mysterious monster lurking in the shadows. As an introduction to the New World, most people would gladly go back to Paradise if given the chance.

6

Raijin Island Makes Enel Look Like Child’s Play

An Island That Lightning Strikes Without Mercy

Another one of the introductions into the New World is Raijin Island, which some might consider if Punk Hazard seems a bit too extreme for their liking. The problem is, this island is even worse, with countless bolts of lightning striking every second. With just one look at Raijin Island, it’s pretty safe to say this place is a death trap.

Fortunately, there is a strange old lady offering umbrellas for those adventurous enough to check out the place. How much an umbrella will help against constant lightning strikes remains to be seen, however. It’s best to avoid this island entirely if at all possible.

5

Rusukaina Island Is a Land Ruled By Beasts

500 Beasts & Forever-Changing Seasons Give Visitors No Place to Hide

An island that often gets overlooked in the One Piece danger totem pole is Rusukaina Island. If fans remember, this is the place where Luffy trained during the timeskip and attained his Gear 4 form. This bizarre island experiences 48 seasons within a single year, never giving any inhabitants a chance to acclimate before the climate shifts again. But the weather is the last thing any visitor should be concerned about.

Rayleigh told Luffy on his first day on this hellish island that over 500 beasts here were superior to his current strength after Marineford. If Luffy — who had already declared war on the government and defeated Warlords — wasn’t strong enough to take down these monsters, then any regular person has no hope. Everyone should just wave the white flag as soon as they set foot on the island.

4

During Kaido’s Reign, Wano Was Hell on Bluestar

Wano Was a Land of Starvation & Suffering

The most highly anticipated island next to Elbaf was undoubtedly Wano, a nation closed off from the rest of the world. But aside from the lush Flower Capital, Wano was a desolate wasteland filled with toxic water and scarce, inedible food. Every citizen was left to starve and suffer, as they were so oppressed and hopeless that many were debating taking their own lives.​​​​​​

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And if anyone were to ever get out of line, they would be thrown inside Udon Prison and spend the rest of their days in chains, working until they collapsed. During such a reign of terror, Wano ranks as one of the most dangerous locations in One Piece. Luckily, Wano has improved significantly since Kaido’s reign.

3

Pirate Island Is a Lawless Land Ruled by the Blackbeard Pirates

The Island Where the Most Dangerous Pirates Reside

Pirates are the most reckless, unruly group of misfits there is. But when you take the most powerful of these pirates and stick them on an island, all hell is sure to break loose. That is Hachinosu, aka Pirate Island, the place where the Rocks Pirates supposedly formed and now the home of the Blackbeard Pirates.

Not much is known about this lawless haven, but the few glimpses fans have seen from this island proved that it’s nothing to be trifled with. Only someone as powerful as Garp can walk into this den of chaos and run roughshod. But even he would fall to the overwhelming numbers and brutality. For civilians, this place may seem like the worst place in the world — and they wouldn’t be far off.

2

Impel Down Offers 6 Levels of Brutal Torture

Harsh Environments & Zoan Jailer Beasts Are Only What’s on the Brochure

Although Luffy managed to break into Impel Down and escape, that doesn’t mean just anyone could pull it off. Impel Down is by far one of the most dangerous locations in One Piece, and Luffy’s incredible luck and ability to rally allies gave him the slightest chance of survival. With six levels of hell, Impel Down has something for every level of criminal.

The overall environments of each level are brutal, to say the least, whether it’s the forest of blade trees or the freezing hell. Then there are failed Zoan awakening jailer beasts that will crush you without hesitation, and the warden Magellan to finish the job. Suffice it to say, someone escaping like Luffy did probably won’t happen again.

1

Mary Geoise Is Hell in the Heavens

Behind the Celestial Dragons Are God’s Knights & a Power Beyond Imagination

Without the knowledge of the true nature of Mary Geoise, it may seem like a lovely place to visit, but that couldn’t be further from the truth. Even the most powerful figures on the planet wouldn’t want to deal with the monsters residing at the center of the world. At the top, there are the snooty, scumbag Celestial Dragons who will turn anyone into their personal slave or take a life just for their own amusement.

Beyond those despicable nobles, there are God’s Knights and the Five Elders lurking in the shadows, standing at the pinnacle of power in One Piece. Plus, there’s the mysterious Imu, who has these monsters at their beck and call. If the other most dangerous locations were like hell, then this is hell.

One Piece

Release Date

October 20, 1999

Network

Fuji TV