Muir Woods National Monument is a redwoods forest within the the Golden Gate Recreational Area.

Muir Woods is home to an ancient coastal redwood forest. The trees average in age from 400 to 800 years with heights of up to 250 feet. There are trees within the forest that are at least 1200 years old.

Congressman William Kent and his wife Elizabeth Thatcher Kent donated 295 acres of land to the Federal Government to protect the redwood forest. President Theodore Roosevelt established the land as a national monument in 1908.

The National Monument is named after John Muir, a writer and naturalist who founded the environmental organisation Sierra Club.

Muir Woods National Monument is is 19 kilometres (12 miles) north of San Francisco, so is a popular day trip from San Francisco. The park is open from 8am to sunset.