Visiting the interior of Big Ben (the Elizabeth Tower) for free is a privilege reserved exclusively for residents of the United Kingdom, and even then, it requires advance planning through a specific political process. UK residents can contact their local Member of Parliament (MP) or a Member of the House of Lords to request a place on a guided tour, which is offered free of charge but has extremely limited availability and often a long waiting list. For international tourists and those who do not go through an MP, there is no "free" way to enter the tower; you must book an official ticket through the UK Parliament website. As of 2026, these public tours cost approximately £35 for adults and £20 for children (aged 11-17). The 90-minute tour takes you up the 334-step spiral staircase to see the clock mechanism and the Great Bell itself. However, if you simply want to see the exterior of Big Ben and hear it chime, that is completely free for everyone. You can get the best views from Westminster Bridge or across the river at the South Bank. Just remember that "Big Ben" is technically the name of the bell inside, not the tower itself, which was renamed the Elizabeth Tower in 2012.