Wondering what those frat house symbols frat house names mean on fraternity row houses?
Its the Greek Alphabet!
You are seeing the combination of two or three Greek letters that identify the fraternity (or sorority). Here is a chart of all the letters:
Using the chart above, you can see that this is a Sigma Alpha Epsilon house.
Watch out because some symbols look like they would sound like one thing, but really are pronounced differently, like Rho (looks like a P)
Here is a Pi Kappa Phi house.