Some examples of this architecture are

The Eiffel Tower (French: La Tour Eiffel ) is an iron lattice tower located on the Champ de mars in Paris. It was named after the engineer Gustave Eiffel, whose company designed and built the tower. Erected in 1889 as the entrance arch to the 1889 World's Fair, it was initially criticised by some of France's leading artists and intellectuals for its design, but has become both a global cultural icon of France and one of the most recognizable structures in the world. The tower is the tallest structure in Paris and the most-visited paid monument in the world; 6.98 million people ascended it in 2011. The tower received its 250 millionth visitor in 2010.  

The Crystal Palace was a cast-iron and plate-glass building originally erected in Hyde Park, London, England, to house the Great Exhibition of 1851. More than 14,000 exhibitors from around the world gathered in the Palace's 990,000 square feet (92,000 m2) of exhibition space to display examples of the latest technology developed in the Industrial Revolution. Designed by Sir Joseph Paxton, the Great Exhibition building was 1,851 feet (564 m) long, with an interior height of 128 feet (39 m). Because of the recent invention of the cast plate glass method in 1848, which allowed for large sheets of cheap but strong glass, it was at the time the largest amount of glass ever seen in a building and astonished visitors with its clear walls and ceilings that did not require interior lights, thus a "Crystal Palace".
After the exhibition, the building was rebuilt in an enlarged form on Penge Common next to Sydenham Hill, an affluent South London suburb full of large villas. It stood there from 1854 until its destruction by fire in 1936.