The oldest historic sites in Omaha are located in the Florence neighborhood. Other important sites include Capitol Hill, the site of Central High School, where the city's founders held a picnic on July 4, 1854, and Miller's Landing, where the Lone Tree Ferry brought settlers over from Iowa. There is a plaque commemorating Capitol Hill, and Miller's Landing was recently reclaimed and renovated by the city. Prospect Hill Cemetery, where many of the city's founders are buried, stands intact in North Omaha. One of the original parks in the city was Jefferson Square, bounded by 15th, 16th, Farnam and Douglas Streets. It was the location of the first school and first hot air balloon ride in Omaha, as well as the city's Market House, which was razed 20 years after it was built. The park, which was dedicated November 25, 1865, was razed by the city on March 18, 1969.