The Alaska-Yukon-Pacific Exposition opened in Seattle on June 1, 1909 with nearly 80,000 visitors. Originally planned for 1907 to mark the 10th anniversary of the Klondike Gold Rush, the Exposition was postponed two years to avoid a conflict with another summer long exhibition in Jamestown, Virginia, marking that town’s tercentenary. In addition to providing time in which to raise additional funds, the delay gave the planners the opportunity to expand the original concept from that of a commemorative Alaska exhibit to a fair encompassing all the Pacific Rim countries and territories. The new scope of the AYPE would not simply commemorate the past, but display the value of commercial trade with the Pacific Rim, celebrate a new era of commercial and industrial expansion and promote Seattle as its center.

Nationally known landscape architects from Boston, brothers John and Frederick Olmstead, designed the fairgrounds. The central portion of the grounds was oriented along axes that exploited the natural beauty of the setting, with views of Mount Rainer, Lake Union and Lake Washington. Built on 250 acres of the largely undeveloped campus of the University of Washington (and partially funded by the state legislature for later use by the University), the AYPE grounds were close to downtown and convenient transportation. Though most of the buildings, designed by John Galen Howard, were too poorly built to survive, the landscaping of the grounds added value to the university by removing wilderness and opening new possibilities for future university installations.

The grounds were centered around the Arctic Circle, with its cascading fountain and reflecting pool, and the surrounding Court of Honor, flanked by two wings of three buildings on either side. Descending from the domed Government Building, these six building were named for Europe, Asia, Alaska, Hawaii and the industries of Manufacturing and Agriculture. Among other notable AYPE buildings was the Forestry Building, a massive structure built entirely of huge logs in their natural state and surviving for several years after the Exposition as the Washington State Museum, until it was damaged by beetles and razed in 1931. California, Utah, Oregon and Idaho each provided buildings, as did the Washington counties of Chehalis, King, Yakima and Spokane. Most of the buildings were constructed cheaply and easily of plaster and were razed immediately after the fair. Brick buildings that survived include Meany Hall, which was used by the University until the 1964 earthquake, and the Fine Arts Building, now the University’s Architecture Hall. The Geyser Basin reflecting pond still survives as the University of Washington's Frosh Pond; the statue of George Washington, one of several patriotic statues built on the fair grounds, also remains as a feature of the University of Washington campus.

Exhibits ranged from the educational to the sensational, including a 30 feet high pineapple made of smaller pineapples, and an elephant made entirely of exotic nuts. The Fine Arts building displayed numerous paintings in its galleries; government exhibits displayed artifacts of American history and highlighted the work of federal agencies of special interest to the west, such as the reclamation service. The Seattle Symphony Orchestra and other local musical organization held concerts. Many exhibits were enhanced by free lectures and special guided study tours for children. Promotional publications and souvenir booklets accompanied some exhibits, depicting each locality as a sort of paradise on earth. Designated “days” for cities, state, peoples and special interest groups were popular. These included parades, contests, speeches, and balls--often occasions to dress in traditional costumes, as in a pageant of Norwegian history, featuring a Viking ship and armor-clad warriors.

The amusements of the Pay Streak were a popular stop for many Exposition visitors. The Pay Streak featured attractions like the Alaska Theater of Sensation, the Fairy Gorge Tickler ride, a miniature railway journey and a recreation of the Battle of Gettysburg. The Pay Streak also featured a variety of exotic dancers and, purportedly, the largest ferris wheel in the world The most popular Pay Streak attraction, however, was an exhibit of a mock village of the Igorrote people, natives of the Philippine Islands. Igorrote men, women and children were displayed in a simulated “native” habitat, with typical Igorrote houses; they performed dances and demonstrated traditional crafts in their--sometimes controversial--traditional attire of loincloths.

Business leaders hoped the Exposition would create an interest in real estate and lure capital for development to Seattle. Though the fair brought money to the city, it actually brought few long term benefits. The anticipated influx of people from other parts of the country never did occur, nor was there significant increased development of Alaska or the development of better trade relations with Pacific rim countries. The buildings did not offer much help to the University of Washington. The fair returned a modest profit, however, and paid a 4 % dividend to stockholders. It brought some recognition to Seattle, provided a season of entertainment and rallied the local community. After drawing approximately 3.7 million paying visitors to its gate, the AYPE closed on October 16.