As a series that focuses on grand adventure,One Piecehas so many fascinating places to see. From the baffling Sky Island to the perplexing Mermaid Island, and fromthe dangerous Punk Hazardto the mesmerizing Sabaody Archipelago, it doesn’t take a long time for you to find a place that could awaken your sense of curiosity.

One of those places is actually a building made by the World Government. As a matter of fact, this particular building is actually part of the World Government’s three major strongholds,along with Enies Lobbyand Marine Headquarters. This place is called the Impel Down Prison, and it is way more fascinating than you might think.

One Piece Impel Down Underwater

Related:One Piece: Everything You Need to Know About the World Government

The Outer Structure

From the outside, Impel Down looks like an imposing castle that stands proudly in the middle of the ocean. At a glance, the design of this building looks quite similar to a medieval European castle, with its thick walls, humongous doors, and long corridors. But upon closer looks,it is actually much more complexthan just a simple castle floating on the ocean.

As a matter of fact, the structure of Impel Down prison actually extends all the way to the ocean floor. What we’ve seen on the surface is actually just the entrance of the building. There are six more levels below the water, each act as prison for some of the most dangerous criminals in the world. Level 1 is closer to the surface, while level 6 lies at the bottom of the ocean.

One Piece Impel Down Levels 2 to 5.5

Impel Down is specifically built to hold devil fruit users. That means it has all kinds of features to prevent the prisoners from escaping. For starters, the walls of this prison are made out of Seastone, which isthe weakness of every devil fruit user. Furthermore, since Impel Down is built on the Calm Belt, that means sea monsters can freely swim around the prison and devour any prisoners that try to escape. As if that’s not enough, there are also numerous fully armed Marine Ships patrolling the area. So it’s nearly impossible to escape the infamous Impel Down Prison.

The Inner Layers

As mentioned above, the inner layers of Impel Down are divided into six different levels, each level is meant to house certain kinds of criminals based on their bounty rewards or danger level. The deeper you go,the higher the bountyand the danger will be. Each level has its own unique kind of torture, so here’s a brief rundown of every level inside the Impel Down Prison.

There is so much more to the Impel Down prison that we can talk about, but for now, those are the key components that make this place so fascinating and terrifying at the same time. So much interesting storytelling can be done in just one single place.