best concert venue

Kiev Philharmonic Concert Hall, Ukraine.
Only 500 seating. Choir sometimes is being placed on surrounding balcony while the orchestra is on the stage.
The stage is quite small as well. This venue is considered to be an ideal one for unamplified performance.
Another cool one that I realy like is Irridium Jazz Club where the most music you realy hear from the live instrument rather than it's amplified.

My choice is also Carnegie Hall...very "tube-like" sound.

Marakanetz, where is the Iridium Jazz Club? Keep the responses coming as the info is very useful for all of us when we travel.

For great analog sound – Concertgebouw, Amsterdam; the “old” Carnegie Hall; The Large Hall of the Tchaikovsky Conservatory (Bolshoi Sal); Mechanics Hall, Worcester, MA. (no joke!)

For digital sound – Anything built after 1950

second the Greek Theatre at UC Berkeley...

Speaking of the Iridium Jazz Club (in NYC), Billy Cobham is coming there in September. If you've not seen him, you MUST!