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Join Navigation Games for Vampire Orienteering, a free and fun outdoor event for all ages at Danehy Park! Teams of 2–4 people will travel through the park and use a special map to look for checkpoints — before vampires steal them! The event is offered by Navigation Games and sponsored by the City of Cambridge Department of Human Service Programs (DHSP).

Kids in 6th, 7th and 8th grade can come to the Library to celebrate the 20th anniversary of the Twilight series! We will watch highlights from the movies, make fan art and celebrate sparkly vampires. Snacks provided. No registration necessary.

The Ethiopian Elder Group is creating a welcoming space where older adults who immigrated from Ethiopia can build friendships, access resources, and strengthen their independence in Cambridge. Learn how this community-led initiative, led by CEOC's Yemi Kibret and supported by City and nonprofit partners, has grown into a thriving program connecting more than 30 elders through education, wellness, and cultural celebration.

The City is pleased to release the 2020 Canopy Assessment completed by the University of Vermont, which shows that the implementation of the Urban Forestry Master Plan is improving our tree canopy. Building canopy is a slow and steady race, but we are seeing substantive progress. The investments in tree plantings and maintenance combined with tree preservation initiatives are reversing the loss of tree canopy.

Harvard Book Store and the Cambridge Public Library welcome Sahil Bloom—inspirational writer, owner of SRB Holdings, and content creator, captivating millions of people every week through his insights and biweekly newsletter, The Curiosity Chronicle—for a discussion of his debut book The 5 Types of Wealth: A Transformative Guide to Design Your Dream Life. Registration is required.

Your artwork could be featured on a limited edition Cambridge library card in 2027! Create your design with library-provided art supplies and enter yourself into the competition. All supplies will be provided. This program is recommended for ages 5 and up with a caregiver. Registration is not required. For more information about the contest, visit our website or ask at the desk.

To understand our impact on climate change and measure progress over time, Cambridge has committed to doing a greenhouse gas inventory of its emissions at least every five years. This information helps the City understand where emissions are coming from, identify the biggest opportunities to reduce them, and guide the policies and programs that support our goal of reaching net zero emissions by 2050.

A Special Event is a large event such as a festival, road race, parade, film shoot or walkathon. Such events may feature entertainment, amusement rides and food and beverages. Special events may require a number of permits from various City departments depending on the size and nature of the event. The City's Public Works Department manages the City's Special Event program.

Back by popular demand! Join the Friends of the Cambridge Public Library for their used book sale! They'll be selling gently used children’s and adult fiction and nonfiction books at low prices to benefit the Cambridge Public Library. The book sale will be held on June 7-8 from 11 a.m.-5 p.m. at 20 Holyoke Street. Funds from the sales will be used to support Library programs.

Celebrate the end of summer with neighbors old and new! We will have free food, games, crafts, bubbles and a clothing swap! All neighbors of any age are welcome. At 3:30 p.m. we will have a family-friendly concert with music by Music at the Blissful. This event will happen outside. In case of rain or bad weather there will be modified activities inside the O'Neill Branch.