Having a green roof in Toronto is great for the environment because it helps improve air quality and divert waste from landfills. In this city, green roofs also create lovely public spaces and even urban farms that grow a slew of fruits, veggies and herbs.

Here are the best green roofs in Toronto.

The Big Carrot
Find this green roof atop the The Big Carrot on the Danforth. It's especially fitting this roof is located atop one of the city's best green grocers. It features seating areas, gardens and space for community events.

Fairmont Royal York
This 4,000 square foot green roof is located on the 14th floor of one Toronto's most iconic hotels. It grows herbs, edible flowers, fruits and veggies that the Royal York chefs use to whip up fresh meals on site.

Mountain Equipment Co-op
When you visit this King West storefront, you might not realize it's sitting below a 10,000 square foot living green roof that grows flowers, herbs and shrubs.

Ryerson University
This innovative green roof - called the Andrew and Valerie Pringle Environmental Green Roof - on top of the George Vari Engineering building is not only beautiful, it's also an urban farm that grows crops like beans, tomatoes and garlic.

Toronto City Hall
You can walk around this 35,000 square foot green roof on the podium at city hall. It's open all year long if you want to wander around in a lush green space above the city.

Toronto Public Library - Fort York Branch
Toronto's 99th public library is pretty high-tech thanks to its digital innovation hub. But it's earthy thanks to its very own green roof.

Native Child and Family Services
The green roof on top of the Native Child and Family Services building not only has a positive environmental impact, but it also provides a beautiful event and community space.

Sherway Gardens Shopping Centre
Sherway Gardens in Etobicoke has one of Canada's biggest green roofs. This mammoth space is 120,000 square feet.

Lassonde building at York University
It's not surprising that the engineering and computer science building has an innovative green roof. This facility, dating back to 2001, is apparently one of the first green buildings to crop up in Ontario.

Photos of City Hall by Gabriel Li in the blogTO Flickr pool.