You list the Lauterbrunnen valley as maybe the most beautiful place you've ever been. That suggests to me that you didn't take the opportunity while you were there to visit either Wengen or Muerren, both situated partway up the mountains on either side of the Lauterbrunnen valley.
But I agree with your two "exceeded" candidates. I'd say Venice may depend on the time of year. If you're there in the middle of peak tourist season, the throngs may detract significantly from the charm. And in the dead of winter it can be a bit less charming, too, or at least the charm is different.
Other "exceeded" locations:
Hallstatt, Austria
Sagrada Familia church, Barcelona
The Passion Play, Oberammergau, Germany, every 10 years
Paris (despite its exalted reputation)
Bernini's angels on the Ponte Sant'Angelo in Rome
The "Peter & Paul" prison cell in Rome
Van Gogh museum in Amsterdam
Musee d'Orsay, Paris
Wies Church, near Schwangau, Germany
On my "failed' list:
St. Peter's Basilica, Vatican City
Heidelberg, Germany
Interlaken, Switzerland
Lucerne, Switzerland
Zermatt, Switzerland
Sweden (I was an adolescent boy expecting the Swedish Bikini Team cavorting across Norwegian scenery, so the fault is mine, not Sweden's)
Trier, Germany