Whatever floats your boat...
Peniocereus johsntonii and Peniocereus greggii var transmontanus bloom nights. If you look at the right time you will see a moth pollinating the greggii. Also a Cereus species I think the Arizona one is still the coolest. The plant shown in real time went missing this year. I have planted two in its place. An older one which hopefully will bloom in the next few years, and an offspring from the plant that went missing. You will see those transplants in place. Hopefully the older plant will bloom this year.