Singing Christmas Tree upon the location. Since then, the singing Christmas tree concept has spread to Canada, the Philippines, South Korea, Switzerland and Sri Lanka. The most attended tree takes place in Knoxville, Tennessee, with 60,000 attendees in 2007. The first Christmas trees came to the United States in the 1740s from Moravian (now part of the Czech Republic) settlers. In 1851, the first commercial tree lot in the United States was set up in New York City. President of the United States Franklin Pierce set up the first Christmas tree in the White House in 1856. Artificial trees were first developed in
Pierce-Klingle Mansion Pierce-Klingle Mansion Pierce-Klingle Mansion, also known as Linnaean Hill, is a historic house in Rock Creek Park in Washington, D.C. It has been listed on the District of Columbia Inventory of Historic Sites since 1964 and it was listed on the National Register of Historic Places in 1973. It is a contributing property in the Rock Creek Park Historic District. Joshua Pierce built the house in 1823 and named it Linnaean Hill after Carl Linnaeus, the Swedish botanist. Pierce, himself a horticulturist, introduced the box garden to Washington and supplied the first ornamental plantings to the White House, United States