Assuming we're talking Europe? Years ago I drove through Yosemite on a full moon night (back when you could drive through Yosemite) and it was amazing. Going to the Sun road in Glacier National Park is also amazing.
For me, the view of Salzburg in the evening from one of the foot bridges across the Salz stands out as particularly awe inspiring.
St. Mark's basilica, inside with the lights on was also spectacular. It was like the entire place was made of gold.
A particular view in the York Shambles with the Minster in the background also stands out as an incredible moment.
I love anywhere with rolling green hills, farms, stock or wild animals, forests and, most importantly, medieval villages. That includes Burgundy but I was just in the Pyrenees and it may be even prettier. The view from Domme over the surrounding valley is worth the trip.
I also enjoy small port towns (not big industrial port towns). I skipped Honfleur only because I was visiting port towns in Brittany later in the same trip. I loved Dinan, Auray, Pont Aven and others along the southern coast of Brittany.
I also really enjoy beaches when they are big, sandy and deserted. The Costa de la Luz in Spain is a dream. I also really enjoyed the Atlantic coast near Bordeaux recently. Out of season it's not crowded and has massive sandy beaches.
I haven't been as excited by the Alps but that's probably because I lived in California and Washington State and spent lots of camping trips in our western mountain ranges. That said Chamonix was really beautiful.