Undersea Atlantis-like city, with glowing bioluminescent structures, diverse marine life, and merfolk inhabitants.

Futuristic underground city illuminated by bioluminescent plants, with advanced technology, diverse inhabitants, and transparent tunnels.

Mist rising off a serene lake at dawn.

Frost patterns creating intricate designs on a windowpane.

Macro view of colorful mineral formations or the intricate layers in a geode.