St Paul's Cathedral has been an iconic part of the London skyline since it was built in 1666 after the Great Fire.
Check out our 360-degree video to go on a behind-the-scenes tour of the historic building.
Use your mouse, track pad or arrow buttons to look left, right, up and down.
It will not work in the Safari web browser - and is best experienced on the YouTube mobile app.
360 filming courtesy of St Paul's Cathedral.