Bus station
Þjóðleikhúsið
4 locals recommend,
Location
Reykjavík, Reykjavíkurborg
Tips from locals
The National Theater. One of the most beautiful houses in town. The plays are in Icelandic but I recommend going there just to look at the building.
This is the oldest theatre in Iceland, only playing Icelandic pieces or at least translated to Icelandic, but it might be fun to watch, see something different?