attractions at the 1964 New York World's Fair with It's a Small World and costumed character appearances. When the characters proved a hit at the 1964 World's Fair, Walt wanted another outlet for "live" characters; thus, Disneyland put on Disney on Parade, a self-produced live arena show starting in 1969. Small World and its famous song lasted two years at the fair; it was then moved to Disneyland as an expanded major attraction in 1966 and later duplicated in the other Disney theme parks. In 1965, Walt Disney won a bid with the US Forest Service to develop Mineral King as a ski resort. The Sierra Club sued in to stop the development, which was granted by the federal district judge. The Forest Service appealed and won at the appeal and the Supreme Court. The Supreme Court ruling left open to the club the possibility of refiling. In the next round of lawsuits, the same district judge blocked the redevelopment. The injunction and the passage of the National Environmental Policy Act led to Disney backing out. $40 million worth of Walt Disney Productions Convertible Debentures were sold in to fund Disney World (WDW). The next year in February, an agreement was made with multiple labor unions, in which the unions exchanged the right to strike for regular pay increases during the first building phase. By 1971, chairman of the Park Operations Committee and vice president of park operations Dick Nunis was appointed executive vice president of Disneyland and Walt Disney World. Walt Disney World began operation on , with the Magic Kingdom park at a cost of $400 million. The Magic Kingdom had six themed lands: Main Street, Adventureland, Fantasyland, Frontierland, Liberty Square, and Tomorrowland. Additionally, Disney's Fort Wilderness Resort campground and two hotels, Disney's Contemporary Resort and Disney's Polynesian Village Resort, also opened. Disneyland expanded in 1972 with a seventh themed land, Bear Country, replacing the Indian Village of Frontierland, and later renamed Critter Country. In 1979, the Disneyland crafts and maintenance union workers went on strike for 15 days, at first, rejecting and then accepting the park's contract. Space Mountain opens at Disneyland in 1977. Two more hotels opened in 1973 at Walt Disney World: the Golf Resort and the Gold Resort; Disney opened the Buena Vista Club golf club in Lake Buena Vista on .:71 Lake Buena Vista Village, the shopping area, opened on and was renamed