<3 <3 <3 This is wonderful. I love walking sims, and especially ones about galleries I especially love the almost sci-fi vibes that this gives off. I also noticed while on the diving board the water sort of flowed into the room behind me instead of just instantly covering the floor. This is a neat little visual trick that made me smile. Also those echoed footsteps as I stepped inside really pulled the gallery bit off so well.
I fell of the steps to the upper level the first time I entered the gallery, and I drowned and ended up back outside. This little moment of the game really brought my thoughts back to what was going on in this place.
The artwork on the walls was also really cool and reminded me of some of the cover art for PC music songs/EPs https://soundcloud.com/pcmus
Overall this game was wonderful.