it's called the netherlands carillon. or is it carillon? >> depends who you ask.my response, carillon. go to the embassy, they say carillon. >> reporter: the carillon, with its 50 bells, a gift from the queen of the netherlands in 1952 following world war ii. >> moved here in 1960 and tells the story of gratitude. >> people liberated by the americans and the canadians, and this was our gift to the american people liberating us. >> reporter: what would you want them to think as they walk past and learn about it? >> well, i want them to discover the treasure. >> reporter: what a treasurer it is. [ bells tolling ] look behind me. the most impressive view of washington, d.c. we're at the ground level. this, this is nothing. let's head up. so we made the walk. no elevator here. 11 stories to the observation deck. looking down on d.c.'s monumental skyline as we walked right underneath the massive bells. showing up on the carillon, bells playing above us. a little loud, you can hear, but an incredible view as you can see. the hope is eventually to allow the public, many