A vast trading floor inside a glacier, transparent ice walls revealing frozen stars beyond, holographic market data cascading through crystalline pillars, traders in thermal gear moving between glowing terminals embedded in ancient ice

A derelict space station greenhouse where plants have overtaken the hydroponic bays, vines wrapping around zero-gravity water spheres that drift between overgrown corridors, bioluminescent fungi pulsing on the hull, Earth visible through cracked observation windows casting blue light across the wild growth

A brutalist trading pit carved into the side of an active volcano, lava flows visible through reinforced glass walls casting an orange glow on the concrete floors, holographic ticker tapes scrolling across the smoky air, traders in heat-resistant gear screaming orders while geothermal turbines hum beneath their feet

A brutalist concert hall carved into the side of a cliff, massive concrete acoustic shells framing the stage, waves crashing far below through floor-to-ceiling glass walls, storm clouds rolling across the horizon while orchestra seating cantilevers over the void, dramatic uplighting casting geometric shadows across raw concrete surfaces

A derelict deep-sea research station at 4000 meters depth where the pressure doors have warped just enough to let the cold black ocean seep in — bioluminescent organisms colonizing the flooded corridors in eerie blue-green constellations, antique sonar displays still pinging into the void, waterlogged logbooks preserved behind cracked glass, and through a porthole the endless dark pressed against the station like something curious and patient.