For the opposite of the Salisbury Cathedral exposure experience, visit the Crypt of York Minster. Once you are under the tower, you encounter the massive concrete foundations inserted when it was found that there were cracks developing above. Huge concrete blocks, held together with enormous hex-bolts. Then you stop to think of the weight of what's directly over your head, and you move on, smartish!
I was in town with some colleagues on Tuesday, leafleting, and we ended up at the East End of the Minster, currently undergoing a huge restoration project (the great window had started to bow outwards!). We all stood and watched the temporary lift going up the scaffolding until we were looking more or less straight up, whereupon the effect of the clouds scudding overhead gave us collective vertigo and we all nearly fell over backwards!