press release

Pulse Comes to Life at Dilworth Park

JoAnn Loviglio | 215.440.5546


First phase of interactive public artwork by Janet Echelman is activated

PHILADELPHIA (September 12, 2018) – Center City District (CCD) is pleased to present the activation of the first phase of Pulse, a site-specific work of public art created for Dilworth Park by internationally renowned artist Janet Echelman, who reshapes urban airspace with a monumental, fluidly moving sculpture that responds to environmental forces including wind, water, and sunlight.

Inspired by Center Square’s history as Philadelphia’s water and transportation hub, Pulse traces in the surface of the fountain the paths of the subway and trolley lines that converge beneath Dilworth Park.

Pulse, Philadelphia (2018)

Help make the next phases of Pulse a reality through a donation to the Center City District Foundation!

Pulse Hours
Monday - Sunday: 6 a.m. - 1 a.m.
Operates April - November

As SEPTA trains pass beneath, four-foot-tall curtains of colorful atomized mist travel across the park fountain’s surface following the transit lines that that bring more than 70,000 passengers to the site each day.

The first phase of Pulse opened on Wednesday, September 12, at 7:30 p.m. at the northern end of the fountain above the Subway-Surface Trolley Lines, also known as the green line. The launch of the first phase (green line) will help support fundraising to complete the remaining two sections of Pulse, which trace the Market-Frankford Line (blue line) and the Broad Street Line (orange line).

Echelman and her team worked closely with Center City District and the Dilworth Park design team, particularly lead engineer Urban Engineers, landscape architect OLIN, and water feature consultant CMS Collaborative from design concept through test mockups and final implementation. The team collaborated on fine-tuning and testing the mechanisms that provide the work’s dramatic multicolor LED illumination and traveling mist, and adjusting them for daylight and nighttime hours. Echelman created the color for each line by blending multiple individually colored hues of light, drawing inspiration from the ethereal paintings of Mark Rothko.

Pulse utilizes a high-pressure misting system of specialized pumps that create an ultra-fine, fog-like, cool mist that quickly evaporates. The ephemeral mist is made of filtered, softened water onto which lighting is projected so it is completely safe for children to play in.

Described by the artist as “a living X-ray of the city’s circulatory system,” the vibrantly colored mist curtains move across the fountain and mirror the footprint of the trains below, evoking the steam rising from the city’s first water pumping station that was located on the site at the beginning of the 19th century, as well as the steam from the trains at the Pennsylvania Railroad Station that were across the street. While celebrating the site’s rich history, Pulse also embraces the future with cutting edge technology.

“I’m thrilled to see Pulse come to life – my first permanent artwork using cool mist with colored light,” said Echelman. “When I started work eight years ago, this was a forlorn plaza. So it’s especially exciting to see the colors come alive in this beautiful park. The art traces layers of Philadelphia’s history of water with water. With the successful opening of this first phase, I feel great momentum towards completion of the blue and orange lines to activate the entire park.” 

Pulse is a story of convergence on many levels,” said landscape architect Susan Weiler of OLIN, whose team collaborated closely with Echelman. “It’s the convergence of our history with the present day, civic narrative, art, technology, and urban design. These elements come together so elegantly—in a way that only Janet could achieve—for an experience that’s provocative, complex, authentic, and seemingly inevitable.”

CCD’s $55 million renovation of Dilworth Park and its ongoing maintenance, management and programming at the park, has created a welcoming civic space with year-round activities and events for the more than 10 million people who visited the park in 2017.

In designing Dilworth Park, the CCD commissioned Echelman, who reshapes urban spaces with monumental experiential sculptures that respond to environmental forces, to create an innovative work of public art for what was then a barren, unused space. Echelman received the Smithsonian American Ingenuity Award in Visual Arts, honoring “the greatest innovators in America today,” and her TED Talk “Taking Imagination Seriously” has been translated into 35 languages with more than 2 million views worldwide. Oprah’s list of “50 Things That Make You Say Wow!” ranked Echelman’s art No. 1.

During construction in 2014, significant infrastructure was embedded in the park’s 11,160-square-foot fountain in anticipation of the day when Pulse would make its debut.

The first phase of Pulse is made possible by contributions from William Penn Foundation; National Endowment for the Arts; Knight Foundation; ArtPlace America; Poor Richard’s Charitable Trust; Barbara and Ted Aronson; Parkway Corporation; Philadelphia Convention and Visitors Bureau; Henry L. Kimelman Family Foundation; George and Karen Rosskam; PNC Bank; Diversified Search; Michael J. Edwards and Erica Rockenback; George Ahern; Roger Schwab; and Bruce S. and Wendy R. Dunn.

Pulse & Fountain Hours

The best time to view Pulse in full-color is from sundown until 1 am, at which time both the fountain and Pulse turn off.  Each day, the fountain and Pulse turn on at 7:45 am, during daylight the mist is more like a white cloud.

Media Coverage

November 6, 2018 | Pulse by Janet Echelman and OLIN, Architecural Record
October 4, 2018 | Something strange happens at this Philly fountain when a train passes underground, Lonely Planet
September 20, 2018 | Janet Echelman’s Moving Sculpture Creates a “Living X-Ray” of Philadelphia, ArchDaily
September 19, 2018 | Reshaping The Urban Landscape With A Monumental Public Sculpture, Feel Desain
September 15, 2018 | Immersive, colorful mist curtains by Janet Echelman trace train routes in Philadelphia, designboom
September 13, 2018 | The story behind the light-colored mist in Dilworth Park’s new installation, WHYY
September 13, 2018 | 'Pulse' awakens at Dilworth Park, Metro Philadelphia
September 13, 2018 | PHOTOS: Pulse, Dilworth Park’s Misty Fountain Art Exhibit, Is Now Open, Philadelphia Magazine
September 13, 2018 | Green SEPTA mist installation 'Pulse' debuts at Dilworth Park, Philly Voice
September 12, 2018 | Dilworth Park’s new public sculpture is made of mist and light | Inga Saffron, The Philadelphia Inquirer


About Center City District

Center City District, a private-sector organization dedicated to making Center City Philadelphia clean, safe and attractive, is committed to maintaining Center City’s competitive edge as a regional employment center, a quality place to live, and a premier regional destination for dining, shopping and cultural attractions. For more, visit

About Janet Echelman

Janet Echelman combines ancient craft with cutting-edge technology to create artworks that have become focal points on five continents in cities from Singapore, Sydney, Shanghai, and Santiago, to Beijing, Boston, New York and London. Recipient of the Guggenheim, Fulbright, Harvard University Loeb, and Aspen Institute Henry Crown Fellowships, Echelman was named an Architectural Digest Innovator for "changing the very essence of urban spaces." For more, visit