The cavernous, concrete structures contain 4 million square feet of space.

The cavernous structure has never been well suited to its role as a conference centre.

Along the way, you'll pass the Vehicle Assembly Building - a structure so cavernous, clouds are said to have formed inside it.

They range in size from small buildings to cavernous structures with raised ceilings.

But instead of leading back into the morning sunshine, this archway led into a cavernous structure with a saucer-shaped floor.

It was a cavernous structure, 189 feet long and 102 feet wide with a 60-foot-high vaulted ceiling.

The cavernous structure was silent, without the usual hum of activity.

Dawn had not yet arrived, and the cavernous concrete structure was empty, desolate.

Some just stood silently and stared at the cavernous two-story-high structure.

Their confidence bounces off the empty purple seats and oozes from the cold, cavernous structure.