Re: "...a so-called synagogue in India with walls that were made out of cow-dung and straw. How unholy is that?..."
Truth be known, such usage of cow-dung was prescribed by the Hindu Vedas and has been used to scrub out the walls and floors of homes in India for thousands of years.
The Vedas claim that one's house should be scrubbed out with cow-dung to prevent disease, etc...
Here's the clincher: Modern scientific tests have proven that the Vedas were correct...cow dung has antiseptic and antibiotic properties.