breathtaking

adjective2

1. •
   stunningly beautiful; amazing

   • He went to the Grand Canyon and spent a week taking in the breathtaking scenery all around him.
2. •
   Very surprising or shocking; to such a degree as to cause astonishment.

   • The network was established with breathtaking speed in the 1840s, when more than 250,000 navvies were furiously building our railways. — 2019