WASHINGTON, US
Not a museum, this is where the Treasury prints money. Tours are free, but no, they do not give out free samples. It's plenty worth it to come, if only to drool at the millions of dollars created literally in the space of your tour. Hour long tours are available every fifteen minutes Sep-Feb: M-F 9A
M-10:45AM, 12:30PM-2PM; March-Aug: M-F 9AM-7PM. This is one of the most popular tours in town, though, and March-Aug tours require same-day reserved tickets, which you can only get by standing in line as early as 6:30AM-7AM in the busiest weeks, with a limit of four tickets per person in line.
Listen to the audio guide for BUREAU OF ENGRAVING AND PRINTING Free on WIP — starts by itself when you arrive, even with the screen off