Empire State Building

          Empire State Building, New York, United States, located at 350 Fifth Avenue, between 33rd and 34th Streets, in midtown Manhattan.
The Empire State Building is both a New York City and a U.S. National Historic Landmark.
The Art Deco skyscraper was designed by Gregory Johnson and the architectural firm Shreve, Lamb & Harmon Associates and built in just 16 months on the previous site of the famous Waldorf Astoria Hotel. The Empire State Building opened 1st May 1931, and remained the tallest building in the world until 1972 when the World Trade Center opened.

Height from base to Antenna/Spire 443.2 m (1,454 ft)
Height from base to top 381 m (1,252 ft)
102 floors
Built in 1930 and 1931. 

Sydney Opera House

       Sydney Opera House in Sydney Australia, located in Sydney Harbour.
The Opera House was inaugurated by Queen Elizabeth II in 1973, ten years after the original completion date. and is recognised universally as the finest building of the 20th Century even so until this day it remains incomplete. The Opera House is a world-class performing arts center and became a cultural icon of both Sydney and the Australian nation. Sydney Opera House was created by Danish architect Jørn Utzon, he was responsible for the iconic white silhouette, while the interiors were finished off by a team of local architects, after Utzon's resignation in 1966. In June 2007 the Sydney Opera House was included on the UNESCO World Heritage List for its innovation in both architectural form and structural design.
 

Brandenburg Gate

         Brandenburg Gate in Berlin, Germany's capital city.The gate is one of the best known symbols of Berlin and of Germany as well. 
It is one of the former city gates, built 1788–91 (the Quadriga, was installed in 1793), and it is the only one that survives. 
The design of the gate is based upon the Propylaea, the gateway to the sanctuaries of the Acropolis in Athens, Greece. 
The Brandenburg Gate consists of twelve Doric columns, six to each side, forming five passageways. Atop the gate is the Quadriga, the chariot of gods, drawn by four horses and driven by Victoria, the Roman goddess of victory. Today the Quadriga faces east, as it did originally.

The gate has played different political roles in German history, for example: after the 1806 Prussian defeat, Napoleon took the Quadriga to Paris. Some years later the Quadriga was restored to Berlin.
After the construction of the Berlin Wall in 1961, the gate stood in East Berlin, a conspicuous symbol of a divided city. After the fall of the wall it was reopened in December 1989.

Brandenburg Gate is located west of the city center at the intersection of Unter den Linden and Ebertstraße, immediately west of the Pariser Platz

Big Ben

       Big Ben, the Clock Tower of the Palace of Westminster also known as the Houses of Parliament, the seat of the House of Lords and the House of Commons, the two houses of the Parliament of the  United Kingdom. The Palace of Westminster is located in London. 
Actually Big Ben is the nickname of the main bell housed within the tower. The English architect Augustus Pugin designed the clock tower in Gothic Revival style at the end of the 19th century. The tower is housing the world's largest four-faced chiming clock, the clock faces have a diameter of 7 meters (23 ft).
Height of the Clock Tower: 96.3m 316 ft.

Eiffel Tower

      Eiffel Tower (Tour Eiffel), the tallest building in Paris, the capital city of  France. In October 2009 the Eiffel Tower has celebrated its 120th anniversary.

The iron construction is located on Champ de Mars (mars field) close to the Seine River. 
The tower was desigend by Gustave Eiffel and was built between 1887 and 1889 as the entrance arch for the 1889 Exposition Universelle (World Fair). 
On 15 May 1889, the Eiffel Tower opened its door to the public.

The Eiffel Tower is the most visited paid monument in the world.

Overall Height: 324 metres (1,063 ft)

Weight: 
of the metal structure 7,300 tonnes 
including non-metal components approximately 10,000 tonnes.

Piazza dei Miracoli

  Leaning Tower of Pisa is located at Pisa's Piazza del Duomo (Cathedral Square), also known as Piazza dei Miracoli (Square of Miracles) in the city of Pisa in Italy. The Piazza del Duomo with the cathedral (Duomo de Pisa), the baptistery of St. John (Battistero di San Giovanni) the bell tower (Torre di Pisa) and the Camposanto Monumentale with its frescoes, is recognized as one of the main centers for medieval art in Italy. 
The Tower of Pisa is the freestanding bell tower (campanile) of Pisa's Cathedral made of white marble. Its construction began in the end of 1173 and continued (with two long interruptions) for about two hundred years, The reason why the bell tower is leaning is a result of a poorly laid foundation and loose substrate that has allowed the foundation to shift direction, by now about 17 feet (5.2 m) out of the perpendicular. 
Height of the tower is about 56 m (184 ft)
Its weight is estimated at 14,500 tonnes.

Statue of Liberty

      Statue of Liberty, New York,United States, located on a 12 acre island at the mouth of the Hudson River in New York Harbor.
The Statue of Liberty was a gift of international friendship from the people of France to the people of the United States, in recognition of the friendship established during the American Revolution. The French sculptor Frederic Auguste Bartholdi was commissioned to design a sculpture with the year 1876 in mind for completion, to commemorate the centennial of the American Declaration of Independence.

Height from base to torch 151 ft 1 in, 46 m
Foundation of pedestal to torch 305 ft 1 in; 93 m
Thickness of copper sheeting 3/32 of an inch 2.4 mm
Total weight used in Statue 450,000 pounds 204.1 tons