4:putt putt golf course
6:bank with a secret underground vault
10:town hall with a secret underground bunker that is explosion proof
20:a HUGE tree
23: TNT cannon
25: underwater house
27:a working elevator
35:wall over your city
36:a working double door
38:a abandoned house with cobwebs in it
39:a minecart railroad around your village
43:a piston stairway
44: lava/fire trap
45: huge tnt hole
46:a war base
47: giant mushroom house
48:fort with snow golems as soldiers.
50: a lake
I am going to start a new series on my channel where I build all of these.
One idea I am trying out in my latest survival game is to build a covered staircase at the top of an open ravine. The staircase brings you to the bottom of the ravine. Somewhere else at the bottom of the ravine I dig a semi-circular cave into the sidewall that leads to the mineshaft proper. Starting my usual 9x9 mineshaft at the bottom of the ravine saves me some pickaxes.
Then I decided to do a treasury much as this list suggests. However, my treasury is at the bottom of the same ravine with a facade carved out of the ravine's side in the style of the city of Petra. I am still working on this. I plan to store my ores in blocks stacked in an expansive, expandable underground room that just goes on and on...