Yes, you heard right. You can now climb a castle wall in London – and it’s a rather special experience from what we’ve seen. Set at a stunning old Victorian building near Finsbury Park, this place used to be an old water pumping station – now it’s throwing out over 100 rope lines and 250 boulder problems for your everyday entertainment. If you’re a bit dubious at first, relax - there are one-hour taster sessions available (no pressure). Abseiling? They do that too and it’s ‘no experience necessary’. What are you waiting for?