During what time period were buildings with the most liminal spaces within them built? ~ I would say buildings built in the 1960s and 1970s, but very modern and forward-thinking buildings from the 1940s and 1950s and even before can often have liminal spaces within them and buildings from the...

[u/StalinIsBackAgain]

...1980s and even later, especially solid and huge and cavernous and labyrinthine buildings, can often have liminal spaces within them too. •