10. Coral Citadel Observatory
A towering architectural marvel, the Coral Citadel Observatory sits high atop four massive legs made of carved stone bricks and prismarine tiles. Positioned over the intersection of four different coral reef biomes, this build focuses on verticality, reaching up into the clouds to offer an unbeatable view of the surrounding ocean world. The main living capsule is spherical, featuring curved glass walls framed by dark prismarine stairs.
At the very top of the observatory lies a high-powered spyglass viewing deck and daylight sensory network. The interior features spiral staircases wrapping around a central water pillar elevator, linking the sky deck down to a submerged floor fitted with enchanting setups, brewing stands, and rare aquatic plant displays.