Dennis Pappas is a landscape architect with a mission. Based in Brooklyn, New York, he’s spent over 20 years designing spaces that make cities more livable, more sustainable, and more connected to nature.
He doesn’t just design parks or gardens—he creates places where people can breathe easier, feel calmer, and connect with their surroundings.
“Every green space is an opportunity to improve lives,” Dennis Pappas says. “It’s about more than plants. It’s about how people feel and live in these spaces.”
Dennis grew up in Brooklyn. As a kid, he spent his time exploring the city’s parks. He loved the contrast between the hustle of the streets and the peace of those green pockets. That’s what inspired him to choose a career where he could create more of those spaces for others.
The Road to Landscape Architecture
Dennis studied Landscape Architecture at Cornell University. He later earned a Master’s degree in Environmental Design from Columbia University. His time at these schools gave him the tools to think about how cities can incorporate green spaces, even when there’s limited room.
“I was lucky to have great teachers and mentors,” Dennis says. “They taught me that good design isn’t just about what looks pretty—it’s about what works for people and the environment.”
He started his career at a small design firm in Manhattan. Over the years, he worked on residential courtyards, rooftop gardens, and even some large public projects. Each new project was a chance to learn and grow.
What Makes His Work Stand Out?
Dennis’s projects focus on sustainability and community. He doesn’t just build for today—he builds for the future. His designs incorporate native plants, manage stormwater, and reduce the heat that builds up in urban areas. These features make his spaces not only beautiful but also resilient.
One of his most famous projects is the Brooklyn Green Corridor. This project transformed several city blocks into a pedestrian-friendly area filled with trees and plants. It also included rain gardens to reduce flooding.
“Rain gardens are incredible,” Dennis explains. “They’re simple, but they do so much. They filter water, prevent flooding, and support local wildlife. And they look amazing, too.”
Another standout project is New York City’s first carbon-neutral rooftop garden. This garden wasn’t just about creating a green roof—it was about proving that cities can be greener without sacrificing functionality or aesthetics.
Why Green Spaces Matter
Urban green spaces are more than just nice places to visit. They’re vital for the health of people and the planet. Studies show that green spaces can reduce urban temperatures by up to 9 degrees Fahrenheit. They also filter air, removing pollutants that harm human health.
“There’s so much data to back this up,” Dennis says. “Green spaces improve air quality, reduce stress, and even boost property values. We’re talking about benefits that touch every part of life.”
Parks and green areas also bring communities together. People use them to exercise, relax, and connect with each other. In neighborhoods with green spaces, crime rates often go down, and community engagement goes up.
The Challenges of Urban Design
Designing green spaces in cities isn’t always easy. There’s limited land, high costs, and often, strict regulations to navigate. Dennis has faced these challenges head-on.
“The biggest hurdle is often space,” he says. “In a place like New York, every square foot counts. That’s why we have to be creative. Rooftops, alleyways, even underused parking lots can be turned into green spaces.”
He also emphasizes the importance of working with communities. “You can’t just show up with a plan,” he says. “You need to listen. People who live there know what they need better than anyone.”
The Rewards of the Job
For Dennis, the best part of his job is seeing people enjoy the spaces he’s helped create. Whether it’s kids playing in a park or families gathering for picnics, those moments make all the hard work worthwhile.
“I love seeing how people use these spaces,” Dennis says. “They’re not just places—they’re part of people’s lives. That’s what makes it all worth it.”
A Vision for the Future
Dennis believes the future of cities depends on green spaces. With climate change and urbanization, cities must adapt. Green infrastructure will be a key part of that transformation.
“I’m optimistic,” he says. “Cities are starting to realize how important this is. Green spaces aren’t just extra—they’re essential.”
Studies support his view. Research shows that cities with more green spaces are healthier, happier, and more resilient to climate challenges. For example, neighborhoods with parks experience lower rates of depression and obesity.
Dennis is passionate about inspiring young people to enter the field of landscape architecture. He believes the next generation has the creativity and drive to solve the challenges cities face.
“If you care about the environment and want to make a difference, this is an amazing career,” he says. “The world needs people who can think about sustainability and community.”
He also encourages students to get hands-on experience. “Volunteer, intern, whatever you can do,” he advises. “The more you’re exposed to real projects, the more you’ll learn.”
When he’s not designing spaces, Dennis spends his time kayaking, rock climbing, and bird watching. These hobbies keep him connected to nature and often inspire his work.
He lives in Brooklyn with his partner, Alex, an urban planner, and their two rescue cats, Ash and Willow. Together, they enjoy exploring local parks and finding new ways to stay involved in their community.
Dennis Pappas isn’t just building parks and gardens—he’s building a better future. Through his designs, he’s proving that cities can be greener, healthier, and more connected.
“Every project is a chance to make a difference,” Dennis says. “It’s not just about what the space looks like—it’s about how it makes people feel. That’s what matters most.”
