Photo exhibits are pleasant (for me, anyway). They're usually presented in a quiet setting; they are snapshots of other people's lives; you can stare at the same photo for minutes at a time and not be accused of stalking; and the photos do not seem to change their contents and themes from one exhibit to the next. This could explain why I've met more people with Aspie-like behavior at such venues than at the local shopping mall.
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The mere fact that science may not yet adequately explain an object, event, or experience does not mean the immediate explanation should automatically default to a conspiratorial, extraterrestrial, paranormal, or supernatural cause.