1) In 1997, a magnitude 6.0 earthquake struck the Denali National Park area, causing widespread damage to roads, buildings, and infrastructure.

2) On June 16, 1955, the U.S. Army Corps of Engineers completed construction of the Dalton Highway, a 414-mile road that connects Fairbanks to the Prudhoe Bay oil fields in northern Alaska.

3) In 1989, the Exxon Valdez oil tanker ran aground on Bligh Reef, spilling millions of gallons of crude oil into Prince William Sound. The cleanup effort lasted for years and had a lasting impact on the local ecology.

4) On June 16, 1964, the largest earthquake ever recorded in North America (and the second-largest in the world) struck near Anchorage, measuring 9.2 on the Richter scale. The earthquake caused extensive damage throughout the region and resulted in over 130 deaths.

5) Finally, on June 16, 1925, a historic event occurred when a team of sled dogs led by musher Leonhard Seppala completed a grueling 658-mile journey to deliver lifesaving serum to the town of Nome, which was suffering from a diphtheria epidemic. This event, known as the "Great Race of Mercy," is celebrated annually with the Iditarod Trail Sled Dog Race.