The phrase "to open the gallery" means to start or begin an art exhibition or show at a gallery, where people can come and view the artworks on display. Full definition
The decision to open a gallery in the region was prompted by «explosive growth in the interest for Western art among Asian collectors,» he said. (nytimes.com)
Click on any image below to open a gallery of some of the highlights. (apollo-magazine.com)
Open gallery space can be requested and approved after add / drop via 25 Live. (cooper.edu)