An astronaut

A floating island ecosystem: a chunk of earth suspended in air with waterfalls pouring off multiple edges, a small forest on top, exposed roots and rocks hanging underneath, and smaller floating rocks nearby connected by ancient chain bridges

A massive world tree: an enormous trunk with roots visible above ground forming archways, multiple levels of thick branches like platforms, glowing fruit hanging from smaller branches, and vines draping down

A steampunk airship with a wooden hull, large brass propellers on each side, a balloon made of patchwork fabric above the deck, hanging ropes and ladders, and a glass-enclosed bridge at the front

A cozy cottage

A treehouse village: three large treehouses in adjacent trees connected by rope bridges, each house with different architecture (one rustic, one elvish with curved lines, one modern with clean angles), rope ladders down, and lanterns hanging from branches

A medieval stone castle with curtain walls forming a square, four tall corner towers with battlements, a central keep, a gatehouse with an archway and portcullis, and a surrounding moat with a small drawbridge.

A flying aircraft carrier with a flat deck on top, control tower, planes parked on deck, massive jet engines underneath keeping it aloft, and radar dishes