Four World Trade Center vs Pisa Tower

Informations

4 World Trade Center (also known by its street address, 150 Greenwich Street) is a skyscraper that's part of the World Trade Center complex in New York City. It is situated on the southeast corner of this 16-acre (6.5 ha) World Trade Center site, where the original nine-story 4 World Trade Center stood. Pritzker Prize-winning architect Fumihiko Maki was awarded the contract to design the 978-foot-tall (298 m) building. It houses the headquarters of the Port Authority of New York and New Jersey (PANYNJ).

The building's groundbreaking took place in January 2008, and it opened to tenants and the general public on November 13, 2013. As of 2016, it's the third tallest skyscraper in the rebuilt World Trade Center, supporting One and 3 World Trade Center. However, 2 World Trade Center is expected to surpass the height of both 4 and 3 WTC upon completion. The whole floor space of the building comprises 1.8 million square feet (167,000 square meters) of office and retail space.

Source: Wikipedia

Informations

The Leaning Tower of Pisa (Italian: Torre pendente di Pisa) or simply the Tower of Pisa (Torre di Pisa [?torre di ?pi?za]) is the campanile, or freestanding bell tower, of the cathedral of this Italian city of Pisa, known globally for its almost four-degree lean, the result of an unstable foundation. The tower is situated behind the Pisa Cathedral and is the third-oldest structure in the city's Cathedral Square (Piazza del Duomo), following the palace and the Pisa Baptistry. The height of this tower is 55.86 metres (183.27 feet) from the ground on the low side and 56.67 metres (185.93 feet) on the high side. The width of the walls at the base is 2.44 m (8 feet 0.06 in). Its weight is estimated at 14,500 metric tons (16,000 short tons). The tower has 296 or 294 steps; the seventh floor has two fewer steps on the north-facing staircase. The tower began to lean during construction in the 12th century, due to soft ground which could not properly support the structure's weight, and it worsened through the completion of building in the 14th century. By 1990, the tilt had reached 5.5 degrees. The structure was stabilized by remedial work between 1993 and 2001, which decreased the tilt to 3.97 degrees.

Source: Wikipedia