this frank lloyd wright-inspired chitectural gem remains the crown jewel of the desert. - [voiceover] frank lloyd wright was utilizing the textile block design in many of his buildings during that era and it's based on the trunk of a palm tree and there are actually 34 different designs throughout the properties. - [voiceover] also, for those in search of romance and relaxation, join us as we take you to the great outdoors at napa valley's calistoga ranch. - [v[vceover] at calistogaga ranch, you'll l perience the most upscale treehouse experience you've ever had.

frank wright's iconic falling >>> with ear back now at 78:46. >> falling water was built in the 1930s by we found architect frank lloyd wright and the results were not what the owner originally had in mind. erica hill is here to check it out. >> turned out all right in the end, iconic and beautiful and timeless and as we recently saw firsthand falling water was designed with a remarkable attention to detail. perched above a western pennsylvania water fall falling woods around it as if it was always meant to be here. >> the house at falling water grows from the ground almost like a tree grows from a ground. >> the home built in the late '30s by frank lloyd wright as a weekend retreat by commissioned by edgar and lillian kaufman, owners of a famous pittsburgh department store. they had been coming to this spot for years, the sanctuary in the country. the kaufmans expected the house to be built with a view of the waterfall and not on top of it and quickly realized the beauty of living above this falling water. is there had a common reaction when people see it for the first time? >> yeah, wow. >> reporter: open flow, something wright was known for,

>> the house at falling grows from the ground almost >> the home built in the late '30s by frank lloyd wright as a weekend retreat byby edgar and lillian kaufman, owners of a famous pittsburgh department store. they had been coming tospot for years, the sanctuary in the country. the kaufmans expected the house to be built with a view of the waterfall and not on top of it and quickly realized theing above this falling water. is there had a common reaction when people see it for the first time? >> yeah, wow.n flow, something wright was known for, allowed for easy entertaining which they did often. mingling with an eclectic crowd of artists and thinker, the furniture much of it built in was also built by wright. >> the smooth surfaces of the concrete and warmth andolness. >> reporter: seamless windows maximize the connection to the outdoors along with expansive in the living room the hatch normally closed to opened to reveal direct access to the stream below. >> these sections push back which are concealed under the >> reporter: how did falling water change things for frank lloyd wright? >> came

. >> architectural giants like frank lloyd wright, mies van der rohe, jeanne gang has also made her mark 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 rea

water change things for frank lloyd wright? >> came at a time in his career when he had very little work. he was 67 years old and this was his statement o o i'm still many a fire. >> reporter: thanks to the kaufman family more than 4.5 million visitors have wked the grounds of the most well preserved wright home in the@ united states. they entrusted falling water and several hundred acres of land to the western pennsylvania conservancy and today it's the only one of wright's homes open to the public with its original furnishings, artwork and setting intact. what do you think it is that keeps people coming here? >>t has had a timeless quality about it, and i think as long as it's cared for and presented the way the kaufmans understood it, it should continue to speak to generations to many could. main that ining falling water is a year round job. stripped yearly and the caretakers focus on the wear and their that come from the 160,000 advici thors that come and they limit the number of visitors. tours resume in march but it's not

. ``>> falling water was built in ``the 1930s by we found architect ``frank lloyd wright and the ``results were not what the owner ``originally had in mind. ``erica hill is here to check it ``out. ``>> turned out all right in the ``end, iconic and beautiful and ``timeless and as we recently saw ``firsthand falling water was ``designed with a remarkable ``attention to detail. ``perched above a western ``water seems to blend into the ``woods around it as if it was ``always meant to be here. ``>> the house at falling water ``grows from the ground almost ``like a tree grows from a ground. ``>> the home built in the late ``'30s by frank lloyd wright as a ``weekend retreat by commissioned ``by edgar and lillian kaufman, ``owners of a famous pittsburgh ``department store. ``they had been coming to this ``spot for years, the sanctuary in ``the country. ``the kaufmans expected the house ``to be built with a view of the ``waterfall and not on top of it ``and quickly realized the beauty ``of living above this falling ``water. ``is there had a common reaction ``when people see it for the first ``time?

it is like frank lloyd wright methadone architecture. not where you want to go three days a week. certainly not where you want your kid or nephew to have to go. so we have 1,400 of these programs in the united states. most live providing only methadone. they could provide buprenorphine. they are subject to regulations. it is a somewhat high risk under taking. so it merits some careful attention. now, unfortunately some states have chosen to prohibit the opening of further opiate treatment programs. other communities have decided that they have to have special zoning, which is a big part how you end up in an ugly building next door to a car wash. so if you want to find out -- everything samsa has how to open otp, what goes into it, how they are really regulated, how they get accredited, what do you have to do and be to operate an opiate treatment program, we have our website here. and then i have our resource for your providers and program staff, which is the pcssmat to go into it a little bit. this is where my private practice was. so i saw the same patients here. i was up there o

. >> reporter: how did falling water change things for frank lloyd wright? >> came at a time in his career when he had very little work. he was 67 years old and this was

. >> the home built in the late '30s by frank lloyd wright as a weekend retreat by commissioned by edgar and lillian kaufman,

. >> reporter: how did falling water change things for frank lloyd wright? >> came at a time in his career when he had very little work. he was 67 years old and this was his statement of i'm still many a fire. >> reporter: thanks to the kaufman family more than 4.5 million visitors have walked the grounds of the most well preserved wright home in the united states. they entrusted falling water and several hundred acres of land to the western pennsylvania conservancy and today it's the only one of wright's homes open to the public with its original furnishings, artwork and setting intact. what do you think it is that keeps people coming here? >> it has had a timeless quality