1. In 1867, the Washington Territorial Legislature adjourned for the last time in Olympia, marking the end of Washington's territorial period and the beginning of its statehood process.

2. On April 24, 1935, the iconic Smith Tower in Seattle was declared the tallest building west of the Mississippi River. It remained the tallest until the Space Needle was built in 1962.

3. The first known white settler in Washington, Michael T. Simmons, arrived at what is now Tumwater on April 24, 1845.

4. On this day in 1913, the Calumet Hotel in Seattle officially opened its doors. The hotel was an important center for Seattle's arts and culture scene, hosting famous guests such as Babe Ruth and F. Scott Fitzgerald.

5. The Seattle World's Fair, also known as the Century 21 Exposition, opened on April 21, 1962. While not on April 24 specifically, the fair remained a major event throughout the month of April and had a significant impact on shaping the city of Seattle as we know it today.