Lots of different bird species all along trail and it's located in the middle of Kirkland suburbia so it provides a peaceful respite despite some of the street traffic noise. One can walk, run, or bike along most of the trail and it connects you to Juanita Beach Park which is especially beautiful in the summer.
Holly O. on Mercer Slough Nature Park
This trail was very close to my Hotel in Bellevue and was a nice way to kill some time. It was a relaxing walk with historical markers along the way. I suspect it's a popular walk when Blueberries are in season!
Great walk for little kids. Can use a baby jogger, plenty of room. Great boardwalks, bark trails, birds, dragonflies and other little critterrs. Park at the Winters House and walk the loop that passes the Boiler House sinking in the marsh. Highly recommended if you just need to get out of the house and not have to drive out to the sticks!
A nice short n easy walk in Bellevue. There are a number of interesting things to take a look at such as the old home off Bellevue way, a rotting pumphouse, the blueberry fields, a nice rhody patch, a nice bridge, some fun boardwalks, plenty of birds and a pretty good area of wetland. Mercer slough trail is a good walk for a dry winter day.