to the union," is fired on Independence Day at noon by any capable military base. New York City has the largest fireworks display in the country sponsored by Macy's, with more than 22 tons of pyrotechnics exploded in 2009. It generally holds displays in the East River. Other major displays are in Seattle on Lake Union; in San Diego over Mission Bay; in Boston on the Charles River; in Philadelphia over the Philadelphia Museum of Art; in San Francisco over the San Francisco Bay; and on the National Mall in Washington, D.C. During the annual Windsor–Detroit International Freedom Festival, Detroit, Michigan hosts one of the largest fireworks displays in North America, over the Detroit River, to celebrate Independence Day in conjunction with Windsor, Ontario's celebration of Canada Day. The first week of July is typically one of the busiest United States travel periods of the year, as many people use what is often a three-day holiday weekend for extended vacation trips. Celebration gallery Notable celebrations Held since 1785, the Bristol Fourth of July Parade in Bristol, Rhode Island, is the oldest continuous Independence Day celebration in the United States. Since 1868, Seward, Nebraska, has held a celebration on the same town square. In 1979 Seward was designated "America's Official Fourth of July City-Small Town USA" by resolution of Congress. Seward has also been proclaimed "Nebraska's Official Fourth of July City" by Governor J. James Exon in proclamation. Seward is a town of 6,000 but swells to 40,000+ during the July 4 celebrations. Since 1912, the Rebild Society, a Danish-American friendship organization, has held a July 4 weekend festival that serves as a homecoming for Danish-Americans in the Rebild Hills of Denmark. Since 1959, the International Freedom Festival is jointly held in Detroit, Michigan, and Windsor, Ontario, during the last week of June each year as a mutual celebration of Independence Day and Canada Day (July 1). It culminates in a large fireworks display over the Detroit River. The famous Macy's fireworks display usually held over the East River in New York City has been televised nationwide on NBC, and locally on WNBC-TV since 1976. In 2009, the fireworks display was returned to the Hudson River for the first time since 2000 to commemorate the 400th anniversary of Henry Hudson's exploration of that river. The Boston Pops Orchestra has hosted a music and fireworks show over the Charles River Esplanade called