The Colossal Devil City, as it sounded, the walls were hundreds of feet tall with thick pillars supporting them. These walls were made up of some common types of stones that everyone could recognize, and they didn't look extraordinary as a result.
But the same couldn't be said for the pillars as they were cylindrical with figures of a humongous devil carved upon them. They had blue gems embedded on their sockets that shone light upon the lands in a mile radius.
There were four large gates in each direction where many devil commanders could be seen guarding. Not only on the gates, but they were on the top of the walls too.
Similar to the ones in the wasteland, they were radiating a strong sense of bloodlust and seemed quite scary. But the difference was that they were wielding good sets of weapons and wearing heavy armors.