The visit to the Capitol can be booked in advance ...

The visit to the Capitol can be booked in advance on the web and is free. The site is amazing, the tour lasts about 45 minutes and is very well explained by your guide. It is educational and provides a lot of information about democracy in the US. Stand out the gallery of the statues. You can get there on the Metro Red line. The stop is Union Station. Also in the Blue, Orange and Silver. The stops are Capitol South and Federal Center.