Honestly, I can't ever recall any visit to Merrill Auditorium which I didn't love, even if the show was just "so so." This concert hall is absolutely beautiful to behold. It was renovated in 1997 to the decoration and condition which it remains in today. The 1900-seat space is enormous, bedazzled, and it hosts a huge variety of large-scale as well as more intimate performances, hosting well-known and esoteric artists alike, from around the world. I have had the opportunity to sing on its stage, and I can say that one can 'hear a pin drop' from there.... or from the house floor. The sound acoustics are extraordinary.
I've been to about 100 performances there, including recently seeing Alvin Ailey American Dance Theater. It is so satisfying, in my hometown, seeing great theater and music, in a Class A performance hall, which is both beautiful and comfortable. Of course it is also ADA compliant, and has ramps and an elevator working between floors. Refreshments and souvenirs are generally sold during performances. The PortTix box office has decent hours and is located in the lobby.
Merrill Auditorium is home to the Portland Symphony Orchestra, as well as to the Kotzschmar Memorial Organ: built in 1911, and at the time, it was the second largest organ in the world.