Friday, July 6

This First Friday Art Walk, stroll over to Portland City Hall (389 Congress St.) and check out Portland photographer Tim Greenway’s exhibition, Mackworth Island Transformed: Rocks Reimagined, a display of eye-popping images of rock formations near the island’s breakwater. Opening reception from 5 p.m. to 8 p.m.; on view through August. timgreenway.com.