Tin and copper.
Bronze.
None as it is not a Clock Tower, but the public entrance to the Houses of Parliament. St. Stephens Tower is often mistaken for the Clock Tower housing Big Ben. Big Ben Clock Tower has 5 bells in total.
You're probably thinking of the Great Clock of the Palace of Westminster, which is in the Clock Tower (recently re-named "Elizabeth Tower"). This clock is often, but incorrectly, called "Big Ben". In fact Big Ben is the largest of the bells in the Clock Tower at the Palace of Westminster.
The official name for the Big Ben clock tower is actually 'the Elizabeth Tower'. The tower has four clock faces. The name "Big Ben" actually refers to the largest of the bells in the tower. It is this that is heard striking the hour
There are 5 bells in total. 4 quarter bells and Big Ben the greater bell.
Big ben tower holds the clock faces and mechanism of the big ben tower clock
It should be noted that Big Ben is the name of the bell and not the clock at the Palace of Westminster
The great bell of the clock tower of The Palace of Westminster, London is also known as 'Big Ben'. It is made from cast bronze. The clock tower is made of Caen stone.
The majority of the tower beneath the clock is fairly empty, apart from two exhibition rooms on two floors. The driving mechanism of the clock (which is entirely analogue) is located in a single room, underneath the clock faces. Above the clock faces there are two chambers. The first chamber is the Belfry, and has the bell of Big Ben located in the centre, with four Quarter Bells in the corners. Above this is the mechanism for operating the bells. The highest chamber has a lantern called the Ayrton Light.
People often refer to the clock at the Palace of Westminster (Houses of Parliament) as 'Big Ben. However, Big Ben is actually the 14 ton bell inside the clock tower and was named after Sir Benjamin Hall who was Commissioner of Works when the bell was installed.
Big Ben is the nickname for the Great Bell of the clock at the north end of the Palace of Westminster in London, and is generally extended to refer to the clock or the clock tower as well. The clock tower holds the largest four-faced chiming clock in the world and is the third-tallest free-standing clock tower. The clock tower was completed in 1859 and the Great Clock started on 31 May, with the Great Bell's strikes heard for the first time on 11 July and the quarter bells first chimed on 7 September.
Nothing. It isn't open to the public. The public can visit the tower by appointment only, made through your local Member of Parliament. You can climb the 300 odd steps to the clock and see the workings and bells.
The Westminster Clock Tower, traditionally known as Big Ben.