Construction of which of these famous landmarks was completed first?

'Big Ben' is the nickname for the Great Bell of the striking clock at the north end of the Palace of Westminster in London and is usually extended to refer to both the clock and the clock tower. The official name of the tower in which Big Ben is located was originally the Clock Tower; it was renamed Elizabeth Tower in 2012 to mark the Diamond Jubilee of Elizabeth II, Queen of the United Kingdom. The tower was designed by Augustus Pugin in a neo-Gothic style. When completed in 1859, its clock was the largest and most accurate four-faced striking and chiming clock in the world.

The Royal Albert Hall is a concert hall on the northern edge of South Kensington, London. One of the United Kingdom's most treasured and distinctive buildings, it is held in trust for the nation and managed by a registered charity (which receives no government funding). It can seat 5,272.

Since the hall's opening by Queen Victoria in 1871, the world's leading artists from many performance genres have appeared on its stage.

The Eiffel Tower is a wrought-iron lattice tower on the Champ de Mars in Paris, France. It is named after the engineer Gustave Eiffel, whose company designed and built the tower. Constructed from 1887 to 1889 as the entrance to the 1889 World's Fair.

The Empire State Building is a 102-story Art Deco skyscraper in Midtown Manhattan in New York City. It was built from 1930 to 1931. Its name is derived from "Empire State", the nickname of the state of New York.