The Mariposa Grove, near Yosemite's South Entrance, contains about 500 mature giant sequoias, which are among the largest living things on Earth. The Mariposa Grove is a popular destination, drawing hundreds of visitors each day who meander along the pathways among some of the largest trees in the world. Bus parking reservations are required for all commercial and non commercial operators with vehicles over 21 feet in length arriving at the Mariposa Grove. The reservation must be obtained by the transportation operator or the tour company. Individual (private) vehicles do not require a reservation and may park in the Mariposa Grove Day Use Parking area.