Palau Güell, Carrer Nou de la Rambla, Barcelona

We've come over to Barcelona for a long weekend in order to meet up with son Joe and his girlfriend Nicole. They're both working on the digital marketing side of a company importing and exporting drones. With my photo antennae switched to on I was quite excited when I heard that and fascinated when I discovered the drones in question were for underwater use. Some can be programmed to follow and video shoals of fish while others are for checking the condition of hulls below the waterline.

Out wandering from early on to well past bedtime. Here there and everywhere that was walkable.

Extra:
Main picture reverse angle