D.C. Arts Center will be openfor 25 hours on the weekend

From 7 p.m. Friday to 8 p.m. Saturday, the D.C. Arts Center, 2438 18th St. NW, will host a nonstop anniversary event, “25 Hours for 25 Years of DCAC,” that celebrates both artistic creativity and physical endurance. The event is similar to an all-nighter that the nonprofit gallery and theater — described as an interdisciplinary alternative arts center — hosted when it first opened its doors, in 1989.

For 25 consecutive hours, any artist can hang artwork in the gallery, provided the artist stays until the end of the event. If the artist leaves, the work will be taken down. Works can be for sale and artists may replace works that sell. The theater will also feature continuous performances.

After the 25 hours ends, on Saturday night, the party will continue with an open house with DJs, videos and drinks.

The arts space has collected an anniversary Tumblr archive at archivedcart.tumblr.com, with news clips, recollections and photos. For information, e-mail info@dcartscenter.org, call 202-462-7833 or visit www.dcarts

Home energy-saving class offered at D.C. libraries

The D.C. Public Library system and the electric utility Pepco are offering a free, one-hour course on ways that residents can save energy and reduce electric costs. The program, developed by Pepco and George Washington University, explains how home electricity use works and introduces online tools to offset costs. The classes are from 7 to 8 p.m. on the following dates at various libraries:

Wednesday, July 23 — Dorothy I. Height/Benning Rd., 3935 Benning Rd. NE

Tuesday, July 29 — Mt. Pleasant, 3160 16th St. NW

Thursday, Aug. 14 — Petworth, 4200 Kansas Ave. NW

Thursday, Aug. 28 — Northeast, 330 Seventh St. NE

Thursday, Sept. 11 — Chevy Chase, 5625 Connecticut Ave. NW

Wednesday, Sept. 17 — Martin Luther King Jr. Memorial, 901 G St. NW

Wednesday, Sept. 24 — Lamond-Riggs, 5401 South Dakota Ave. NE

Attendees will receive a free reusable gift bag. Free children’s activity books are also available to parents.

Get a Logan Circle history tour and scavenger hunt in one

Cultural Tourism DC, a nonprofit group that promotes awareness of District history, has collaborated with the company Stray Boots to create an app that is part walking tour, part scavenger hunt.

The app guides players around Logan Circle to solve a series of challenges and trivia questions while earning points, taking photos and learning the neighborhood’s history. The tour is self-paced but has a scoring system. When a player answers incorrectly, the app provides a hint for a possible second response. Though designed for groups, it can also be played by an individual.

The content introduces players to the poets, ministers and politicians who lived and worked in Logan Circle. They can chart the area’s rise, fall and revitalization while stopping by Civil War camps and artistic havens that shaped the District’s arts and entertainment district.

The tour costs $12 and is available for Android or iOS. For information, go to www.strayboots.
and download the Stray Boots app.

— Compiled by Terence McArdle