Buildings require goal completion

[GrandFatherDragon]

When I look at decorations in the market I see three showing goal required. They are Sword in Stone, Robot Monument, and Nether Portal. What are the goals I need, how do I get them, and can I get them on android?

[[S8] Elsa]

These are legacy goals. I can't speculate if they'll be available in the future. If we remove them from the market, players who unlocked them would lose access to buying them so they're always visible.