Some cool image stock images:
Rendevous- Dinner...P8091254
Image by madle-fotowelt.de
SF Palace Of The Fine Arts
Image by Matthew Field
In a polar projection
only a 5000 version of the 10000 wide original is uploaded
See the immersive VR tour version here
The equirectangular version is here
Square version of "rusted window on a failed attempt"
Image by Matthew Field
of this photo
for the squared circle group pool