Clean and pretty.

The security guards sometimes hassle foreigners when you're taking photos. It's irritating because I saw locals taking photos and they didn't say anything to the them.

There are also pick pockets right outside the cathedral so be careful... They usually stand in a group. One guy will point at a magazine on one side of you pretending like he's trying to sell you something while another guy will grab your arm on the other side. When you turn toward the guy grabbing your arm, the guy on the other side will grab something from your pocket and slip it in his magazine. It's a very common trick the pick pockets use in Ethiopia...

The other thing they sometimes do is spit on you, pretend it was by accident, tell you not to touch it because they have TB, help you clean it up with water, and then empty your pockets while they're doing that.