Mount Lookout celebrates 38 years of its annual luminaria event, during which the streets and shops of Mount Lookout Square are lit with candles in paper bags. The Cincinnati Observatory is participating again this year with an open house full of caroling, stargazing and hot drinks.
6:30-8:30 p.m. Sunday. Free. 3489 Observatory Place, Mount Lookout, cincinnatiobservatory.org.