In the contrary to what the guy above said, there are plenty of things to do in Liverpool.
You've got Liverpool One shopping, the docks, tonnes of museums covering a wide variety of topics, tonnes of great bars and clubs, could go up the Radio City tower if you want to for a tour, plenty of good restaurants, chinatown plus a wide variety of historical monuments if you're into that sort of thing - I could go on.
There's also the ferry's, there are often boat tours you can take along the seafront, beatles related stuff if you're into your music etc...