Visit Website Get Directions Mt. Vernon Gardens Address: 6011 S. 13th St Omaha, NE 68108 Phone: (402) 444-5955 Social: Facebook Twitter About 6011 S. 13th St - A site atop a Missouri River bluff is home to a small version of George Washington's Mount Vernon estate. View 16 rosebeds and 25 flowerbeds. Open daily, 5am-11pm. Free. 402-444-5955