You buy a parking lot, sit on it as the value of land increases (paying effectively 0% in taxes), then you eventually sell, paying only a capital gains tax (much lower than income).
I only bring up California, because I know it. I'm sure there's similar dodgy tax advantages in other states.
Point being -- taxing land the way we do (especially in California) seems to be problematic.
This is also the reason you see single family homes with front and back yards like 1000 meters away from sky scrapers in Los Angeles and San Jose. Those homes are paying property taxes of like $400 a year, and most of them are being rented out. It's not poor old ladies living in them that don't want to leave the neighborhood they lived their whole lives in, but gentrified under their feet into some urban monster. It's business people arbitraging tax laws.