Question: Which was built later, One World Trade Center or Latting Observatory?

<P0-S0> Guy Frederick Tozzoli (February 12, 1922, North Bergen, New Jersey – February 2, 2013, Myrtle Beach, South Carolina) was director of the World Trade Department of the Port of New York Authority in the 1960s. <P0-S1>  As such he was the driving force behind the development of the World Trade Center. <P0-S2>  Tozzoli was also a founder of the World Trade Centers Association, which fostered the development and operation of World Trade Centers globally. <P0-S3>  Tozzoli was the driving force from New York City, while his business associates Soichiro Honda and Paul Fabry led the WTC effort in Tokyo and New Orleans respectively. <P0-S4>  Tozzoli graduated from Fordham University and later served his country as a lieutenant in World War II and the Korean War. <P0-S5>  Tozzoli was credited for hiring Minoru Yamasaki to design the World Trade Center complex which was dedicated in April, 1973. <P0-S6>  Tozzoli retired as Director of the World Trade Department for the Port Authority in 1987, but remained as president of the World Trade Centers Association until January 2011. <SEP> <P1-S0> The Latting Observatory was a wooden tower in New York City built as part of the 1853 Exhibition of the Industry of All Nations, adjoining the New York Crystal Palace. <P1-S1>  It was located on the North side of 42nd Street between Fifth Avenue and Sixth Avenue across the street from the site of present-day Bryant Park. <P1-S2>  Conceived by Waring Latting and designed by architect William Naugle, the observatory was an octagonally-based, iron-braced wooden tower 315 ft high adjoining the Crystal Palace, with landings at three levels on the structure, allowing visitors to see into Queens, Staten Island and New Jersey. <P1-S3>  The tower, taller than the spire of Trinity Church at 290 ft , was the tallest structure in New York City from the time it was constructed in 1853 until it burned down in 1856. <P1-S4>  The tower's base was a 75-foot square, tapering to a top of six to eight feet. <P1-S5>  It could handle up to 1,500 people at a time. <SEP> <P2-S0> Construction of One World Trade Center was deferred until 2006 because of disputes between the Port Authority of New York and New Jersey and the developer. <P2-S1>  Tishman Realty & Construction is the selected builder. <P2-S2>  The building reached ground level on May 17, 2008, and was topped out on May 10, 2013. <P2-S3>  One World Trade Center opened to tenants on November 3, 2014, and One World Observatory opened to the public on May 29, 2015. <SEP> <P3-S0> One World Trade Center (also known as 1 World Trade Center, 1 WTC or Freedom Tower ) is the main building of the rebuilt World Trade Center complex in Lower Manhattan, New York City. <P3-S1>  It is the tallest building in the Western Hemisphere, and the sixth-tallest in the world. <P3-S2>  The supertall structure has the same name as the North Tower of the original World Trade Center, which was destroyed in the terrorist attacks of September 11, 2001. <P3-S3>  The new skyscraper stands on the northwest corner of the 16 acre World Trade Center site, on the site of the original 6 World Trade Center. <P3-S4>  The building is bounded by West Street to the west, Vesey Street to the north, Fulton Street to the south, and Washington Street to the east.