NeaEkkleasia is an End Stone Castle, which is a structure generated by the Better Dungeons mod. It is spawned in deserts and is mainly composed of blocks that use desert coloring, mainly sand, sandstone, and endstone. This structure is a great way to gather End Stone without the hassle of find a Stronghold and traveling to the end. NeaEkkleasia consists of three floors: the enterance floor or "Great Hall", a balcony floor above, and below a large room with balconies going down to the boss. There is also a large carpeted balcony with a Large Chest. This castle is guarded by the Better DungeonsDefault Mob with the mob's default boss.
This Castle's rewards are moderate and it is more profitable to usually just collect the blocks of the Castle