Arbor Day on Friday, April 27, is the perfect time to celebrate your love of trees and nature with a visit to “World of Nature,” at the Glenview Mansion Art Gallery.

Costumes are encouraged for fun and death at the Glenview Mansion. A Taste for Murder Productions will present an interactive murder-mystery comedy, “Murder at the Mansion: A Room with a Clue.”

The Sixth Annual A-RTS at Rockville Town Square Affordable Arts Festival returns May 5-6 with art, food and live music.

“Radium Girls” continues a season of Rockville Little Theatre performances celebrating the resident company’s 70th anniversary. Inspired by a true story, the provocative, fast-moving drama follows Grace Fryer, a watch dial painter, as she fights for justice against her former employer. Directed by Tristan Poje.

Flags from 193 United Nations-recognized countries, which were attached to light poles around Rockville Town Center last spring, were removed in anticipation of the windstorm which swept through the region on Friday, March 2. The world’s flags are scheduled to be returned to light poles in early April.

A new online map, Rockville Arts in Public Places, shows the locations of 50 public artworks around the city, alongside details that include the artist’s name and a description or artist statement about the piece.

The 29th annual Rockville Science Day offers a chance to experience science hands-on, with science and technology-related exhibits, activities, games and demos from over 90 local organizations and businesses.