The spirit houses of Thailand are everywhere.
I'm no expert on them, but what I understand is that most homes and businesses in Thailand (and it's neighboring countries) have one of these mini, temple-shaped buildings in an auspicious corner of the property.
The little house is to appease spirits that might otherwise trouble the people there, and so they give daily votive offerings and when they make changes or additions to their own homes or businesses, they also give an "upgrade" to the spirit house.
Since they are to be proportional to the size and wealth of the house, some of them are very elaborate.
Old ones go to a special spirit house "cemetery" so the spirits won't become angry.
One other Thai folklore tradition bit of trivia:
Wednesday is considered a very inauspicious day for a haircut.
Just so you know.