A part of Windsor Castle that's been closed to the public for over 150 years just reopened - and it's been completely revamped. Take a peek inside.

• Windsor Castle's Inner Hall is finally open to the public.
• The Inner Hall was originally built by King George IV in the 1820s as a place to greet guests, but was closed by Queen Victoria in 1866 after she requested that a smaller State Entrance Hall be built, the BBC reports.
• However, a new hall was never built. Instead, the Inner Hall remained idle, soon taking up use as a storeroom.
• Now, over 150 years later, the hall has been fully restored and officially reopened.
• Visit Business Insider's homepage for more stories.

After over 150 years, the Inner Hall of Windsor Castle has finally reopened to the public.

According to the BBC, Inner Hall was originally built in the 1820s by King George IV. He used it as a State Entrance Hall, a place where to greet his guests.

But it was Queen Victoria, who, in 1866, closed the Inner Hall, hoping to build a smaller State Entrance. Ultimately, her intention never came to fruition. Instead the Inner Hall remained closed and was used as a storage room throughout the following decades.

Now, the Royal Collection Trust has announced that the Inner Hall has reopened. The project is part of the Future Programme, a series by the Trust to "enhance the visitor experience at Windsor Castle," per a press statement released by the Royal Collection Trust.

The Inner Hall is in a part of Windsor Castle that dates back to the 14th century, when King Edward III transformed the castle from a military fortress into a Gothic palace. Since then, it has been in use as one of many British royal residences.

Here's what the Inner Hall looks like today.