How many steps does the Capitol building in Washington, DC have?

There are 365 steps to the Capitol building

The 365 steps are from the basement to the top of the dome.

Today, the Capitol covers a ground area of 175,170 square feet, or about 4 acres, and has a floor area of approximately 16-1/2 acres. Its length, from north to south, is 751 feet 4 inches; its greatest width, including approaches, is 350 feet. Its height above the base line on the east front to the top of the Statue of Freedom is 288 feet; from the basement floor to the top of the dome is an ascent of 365 steps. The building contains approximately 540 rooms and has 658 windows (108 in the dome alone) and approximately 850 doorways.

https://www.aoc.gov/explore-capitol-campus/buildings-grounds/capitol-building