Gallery 1855 will host a one-of-a-kind exhibition by local artist Stasia Tikkanen. “Landscapes with a Gist” will run from April 3 to 30. An open house is planned from 1 to 4 p. Sunday, April 8. The exhibit features conceptual landscapes that include a night-and-day series, an in-studio series exploring perception related to the time of day. The artist paints two scenes from the same environment, one in nightlight and the other in daylight to see how light alters the…