The Kimbell Art Museum, shown above, is located in Fort Worth, TX near where I grew up. This exhibit has high, vaulted ceilings that let in a lot of natural light which always stood out to me. The atmosphere it created in the building was very nice for walking around and viewing the artwork.
I recently visited the Monterey Bay Aquarium, and this exhibit really stood out to me. First, the color of their backgrounds in each tank contrasted the colors of the animals which allowed them to really stand out. Also, there were very large and tall tanks that gave you a very nice glimpse into the ocean life.