Every arena in the map store, rendered from the game's own files. Pick one on the left, then drag to orbit and scroll to zoom. Roofs are hidden by default so you can see into the streets.
Tanarus went dark in 2012. The 249 maps on this page — the work of 62 named builders across the life of the game — survive because KillGorack kept them: collected, catalogued and carried forward for over two decades, long after there was anything left to play them on.