Remnant: Great Sakura Empire

The Great Mist Wall

The Great Mist Wall 

The Great Mist Wall was constructed during the rule of the Three sisters. Its height of 700 meters and 500 meters in width makes it the tallest and thickest wall ever built making it the pinnacle of Megastructures in history. It boasts heavy titanium armor and a state-of-the-art radar and sonar system to keep anything that is not registered as the Empire out. It also boasts firepower that could level a few cities when engaged making it the most heavily defended ocean wall fortress around the main island of the Great Sakura Empire. The name, 'Great Mist Wall' or the 'Eternal Mist of Darkness' by the remnants given to the wall was due to the machinery that produced the mist to deter any beings from Remnant that got a little too curious to explore outside of Remnant and encounters them. This was made to ensure the Empire remained out of Remnant's problem for as long as possible till the need to intervene came.

[Taller and is in the ocean around Sakura Empire island filled with defense guns] [The any part of the walls can move to allow for entry]

The Eternal Mist Darkness [What it looks look to the habitants of Remnant]

Exterior Wall Defenses

Interior Wall Defenses [when the intruders breaches into the wall]