In the 1960s, a large chunk of what had been downtown Tucson was swallowed up by a huge Urban Renewal project. Old businesses and residential neighborhoods were cleared to make was for public buildings like the Convention Center.
There’s a vacant lot on the west side of Main Avenue, just south of the corner of Main and Cushing Street. At the far end of the lot is an adobe wall featuring a central niche. Candles burn in glass containers in front of the wall, and the ground around them is darkened by decades of candle wax.