This is architecture at its darkest. From crumbling concrete bunkers to frozen mountaintop monuments, these photographs capture buildings shaped by conflict and collapse - or which intimidate by their sheer brute presence.

This photographic collection explores some of the world's most stark, striking and unsettling buildings, from a windowless skyscraper in New York to an abandoned listening station in Berlin, eerie disused London underground stations and an experimental concrete treehouse near Rome. Spanning imposing private residences, snow-topped former Soviet monuments, dismal utilitarian structures and Brutalist architectural masterpieces from around the globe, these buildings stand united by their bold simplicity and raw, powerful presence.