Boise is the capital of Idaho and is known as the City of Trees. It is a five-letter word that is often used in crossword puzzles. Boise is the largest city in Idaho and is located on the Boise River in southwestern Idaho. It is home to many outdoor activities, such as skiing, hiking, and rafting. Boise is also known for its vibrant arts and culture scene, with many museums, galleries, and performing arts venues.