Lake Union is a freshwater lake located in the heart of Seattle, Washington. It covers an area of approximately 580 acres and is surrounded by several neighborhoods, including South Lake Union and East Queen Anne. The lake is known for its recreational activities, such as kayaking, paddleboarding, and sailing, making it a popular spot for both locals and visitors. The lake is also home to a variety of wildlife, including birds and fish, and serves as a vital part of the local ecosystem. Additionally, Lake Union is connected to Puget Sound through the Montlake Cut and is a key part of the city's maritime history, featuring houseboats and seaplanes that contribute to its unique character.