Although not the capital city of Oregon, Portland is the largest city in Oregon, and the second largest in the Pacific Northwest United States, behind Seattle. The "City of Roses" is among the largest cities in the US, but it goes mostly unnoticed, and is a best kept secret to those that live there. It lies on both sides of the Willamette River, just south of the Oregon/Washington border, and is 60 miles from the Pacific coast. The climate of Portland is moderate (a lot of rain!), and there is plenty of natural beauty in the surrounding areas. In fact, it is known to be one of the most beautiful cities in the western United States. It is near the mountains and the ocean, and also near the Mt. Hood National Forest.
The city's population is estimated to around 540,000, and the entire metropolitan area, which includes the neighboring cities, is above 2 million.
It is pretty easy to get into Portland. There is an international airport 9 miles from downtown. Portland is also served by Amtrak from other major nearby cities, and most other cities up and down the west coast. Same goes for buses.
Getting around in Portland is also easy. There is a well known light system rail that runs downtown, in addition to the buses. The downtown grid also makes it very friendly for walking and biking.