Mount Vernon is open seven days a week, every day of the year, including holidays and Christmas. Visitors are invited to tour the Mansion house and more than a dozen outbuildings including the slave quarters, kitchen, stables, and greenhouse. Stroll four different gardens, hike the Forest Trail, and explore the George Washington: Pioneer Farmer site, a four-acre working farm that includes a re-creation of Washington's 16-sided treading barn. George and Martha Washington rest in peace in the tomb where wreath-laying ceremonies are held daily, and scouts are welcome to participate. The Slave Memorial and Burial Ground are nearby. George Washington worked tirelessly to expand his plantation from 2,000 acres to 8,000 and the mansion house from six rooms to twenty-one.