It is amazing feeling when you arrive to the Machu Picchu! It was especially amazing for me because my girlfriend said YES to my proposal on top of the Machu Picchu!.
Also the other parts of the Inca Trail was amazing, nice ruins and cool landscapes! It was tough walk but totally worth it! The first day was one of the easiest but really nice. Second day was the toughest with lots of climbing but with slow speed it was okay.
Third day was cool with nice paths, too bad we had a cloudy day so we didn't see the views. The last day was climbing to see an amazing view from the Machu Picchu.