A set of new face filters on Instagram and Facebook allow you to transform your features into London icons including Tower Bridge and St Paul's Cathedral.
The City of London Corporation has launched the filters to encourage people to visit the Square Mile and learn more about its history, with its 90-minute self-guided City Visitor Trail.
The filters are interactive: raise your eyebrows, and Tower Bridge's bascules raise. Open your mouth with St Paul's on you head, and heavenly music flows forth. You can also don a gladiator's helmet (in a nod to the Guildhall's Roman amphitheatre), and have various things thrown at you.
The images don't quite do these wonderfully playful filters justice. Here's a video of them in action:
You can download the filters from the City of London website.