Plant ID: white bell-like flower

(Question)

I took this picture a while ago when traveling. Sorry that I do not have a better image. I would love to know what the white flowers are in the image if identifiable. Many thanks!

(Answer)
From the photo, the plant appears to be climbing, although that could be the angle of photo. Below are three suggestions:

1. Clematis alpina ‘White Moth’ – climbing clematis vine

https://www.flickr.com/photos/klasseimgarten/3487901917

Platycodon grandiflorus ‘Albus’ – balloon flower which grows in clump form, not vine

https://www.heritageflowerfarm.com/product/platycodon-grandiflorus-albus-balloon-flower-z-4-9/

Campanula latifolia macrantha ‘Alba’ – bellflower which grows in clump form, not vine

https://www.peakcottageplants.co.uk/product/campanula-latifolia-macrantha-alba/