Observation towers

These rare structures would be found at the top of extreme hills or other mountanious biomes would allow the player to looks around them for other structures or biomes, in side you could also find map to other structures (that cartographers do not sell) and other stronghold like chests. I suggest them to look simalar this: https://images.app.goo.gl/xccuSc7Bwqpp4eZFA but more minecraft like