The Allalinhorn is a four-thousand-meter peak, perhaps the easiest in the Alps from a technical perspective. Since 1984, an underground funicular has operated along its northern flank, taking it up to 570 meters above sea level, significantly shortening the climb.
If you want to be comfortable and just want a view, then take the cable car from Saas Grund to Hohsaas (3300 m, free for Saas overnight guests in summer): …
A slightly different "highlight": The already heavily lost glacier area around the rocky edge (3000 m) is a major construction site in summer. The cathedral, the highest pure Swiss mountain, …