. >> reporter: late at night, they arrived at madison square park. >> there are 49 trees. >> reporteris is how you mapped it out. >> i mapped it out but literally, we had to avoid all the lines. electrical lines, sewage lines. >> reporter: lin modeled the entire project in her new york studio. >> i literally had to choose and recalibrate every hole after the first hole because each tree was in complete dialog with its neighbor. and spacing, distancing -- >> reporter: having mapped it out and studied and made models do you still get surprised? ? i'm terrified it's not going to work. every single time i have nightmares and i never know if it's going to work or not. >> reporter: how on do you feel about it now? >> i'm feeling pretty good about it. i think we need to plant everything. >> reporter: the ohio born artist and architect has made a lasting mark on the american landscape, designing the vietnam's memorial and the civil rights memorial in montgomery, alabama and a series of wave field installations like this one at the university of michigan. >> i am making them closer and i want

big one central park in august something that could simon a garfinkel, that attracted half a million people back then they are planning big things, the foo fighters at new york madison squareck with connell mcshane, ray wang we hope is back with us and last but not least, mike you are a big concertgoer you are waiting for these events, they are on now, are you going to go? >> i am, actually went to atlantic city this past weekend and over 1000 people per concert because i miss concerts so much. i've already been doing it in the ruhr in 2020 is upon us and what's interesting this is supposed to happen in the fall and winter but because of cases going down only 400 cases of covid in new york state, everything is getting moved up quicker and sooner because the high demand, my friends and myself, we are buying concert tickets and food fighters their presale went on yesterday and sold out immediately, the presale because the demand is there, we are ready to go, count me in, i will be everywhere this summer. neil: it's probably because ray wang was buying them a lot. what do you think of all of this. >> i think it is also my left the cocoon of california were redoubled back and

see an image, you can walk a mile south on fifth avenue, and there is quite a nice statue in madison square park of a seated seward. unlike most republicans, they feared that southern secession created an imminent peril of war, and an urgent need to conciliate pro union white southerners. they offered to make explicit in the constitution what most americans assumed already was implicit there. and they persuaded lincoln to get behind the amendment. abraham lincoln's first inaugural address on march 4th 1861 denied that he or the republican party intended to interfere with the institution of slavery in the states where it existed. he then announced that he'd accept the constitutional amendment which two thirds majority and both houses of congress had just approved. behind the scenes, lincoln had quietly told his political allies in congress that he wanted the amendment to pass. it's specified that congress had no power to interfere with slavery in the states where it already existed. the man destined to become the great emancipator thus sounded an entirely different note as he took office. he plea