Strange decorative elements

I found this strangely decorated wall in an apartment complex. Could it be some sort of sensors?
Thanks for viewing and comments!

[Bill Davidson]

An intriguing shot.

[Beverley]

Quite incredible…

[LManning (Laura)]

It’s so unusual!

[Paula Fontanini]

It adds a lot of interest but so unusual!

[Diana]

It sure gave you a great photo op.

[Christina]

Very unusual indeed