mark van der burg: and thank you for stopping by. let me tell you, my boys would love growing up in that house. it is not often you find a home with a baseball field. what would your dream home include? let us know what over-the-top amenity you would have. weigh in on twitter all out, just wait until you head inside the priciest home in atlanta, next on open house, from washington, we head south to georgia. listed at $48 million, we are inside the most expensive home in atlanta. known as chestnut hall, this estate sits on more than 18 acres. with 17,000 square feet of living space, seven bedrooms, a manager's home, and a pool house, you have plenty of space for, well, just about anything. hi, i'm marc castillo with coldwell banker previews international. and welcome to chestnut hall, this world-class estate acres in buckhead, the wealthiest and most exclusive zip code in atlanta. and this home is the crown jewel. as you enter through the 19th-century parisian wrought-iron doors, you're greeted by this truly grand entryway with a 14 a

. >> architectural giants like frank lloyd wright, mies van der rohe, jeanne gang has also made her markee that building, the one that looks like waves. that's her design aptly named aqua. >> when i'm looking in a taxi or someone points out our building, my building, taken aback. it's been draining into the collective memory of the city at this point. it's exciting for me. >> but this incredible skyline was born out of tragedy the great chicago fire of 1871. the fire decimated the city's wooden structures, leaving an estimated 00 people dead. reconstruction soon followed. a process that would redefine both the city and the country. >> if you think about the history of new york it was a dutch settlement and chicago really is the beginning of american city planning. >> and this year marks another defining note in the city's rich architectural history, inaugural chicago architectural biennial. it's a combination of exhibit and think tank devoted entirely to architectural ideas. sarah herd sacks one of its directors. >> we have over 130 participants from 340 countries on six continents. we r