@Mike F.
I'm based out of Texas and I've made offers on properties sight unseen in other cities in Texas and in Colorado. I often do it in Texas by making an offer mid-week with the intent to travel to see the property over the weekend. I schedule the inspection for the following Monday so that it happens within the option period (the number I often see is $100 for a 7 day option), but after I've seen the property in person. This gives me the opportunity to avoid paying for the inspection if I don't like the house, and only sacrifice the option money.
I think it makes sense because it saves me from travelling to the property, seeing the house and liking it, but failing to get an offer accepted at the price I'm looking for. I'd prefer to have the offer accepted, and risk the option money if I don't like what I see.
When I've done this for Colorado, I was willing to buy it sight unseen because I worked with an agent that I really trusted. I wouldn't necessarily recommend this, but I think there are cases where it can make sense. I did view the property before closing, but at that point I was risking my earnest money as well if I decided to back out.
I do agree with others that this definitely isn't the ideal approach, and you should focus on your backyard if possible and at the minimum you really need to know the market you are going into and have trusted professionals to rely on.