This is kind of fascinating. It doesn't seem like the most practical building material, but I'm guessing the monks know what they're doing.
The Wat Pa Maha Chedio Kaew temple has found a way to bottle-up Nirvana, literally. The temple, which sits in Thaisland’s Sisaket province, roughly 370 miles northeast of Bangkok is made of more than a million recycled glass bottles. True to its nickname, “Wat Lan Kuad” or “Temple of Million Bottles” features glass bottles throughout the premises of the temple, including the crematorium, surrounding shelters, and yes – even the toilets. There’s an estimated 1.5 million recycled bottles built into the temple, and as you might have guessed, they are committed to recycling more. After all, the more bottles they get, the more buildings they are able to construct.
As Green as it gets...The Beer Bottle...Buddhist Temple. - MyarchN