Usually climbing buildings is frowned upon by police, security, the general public and your mom.
Watch out. There is no need to climb a building in a situation where you feel like you may get caught. The more people that are caught buildering, the more people that will be on the watch for builderers. In trying to establish new routes, scout out the line of least resistance, and give a shot when you least expect to be caught. LEAVE NO TRACE, as if it were Maine's last remaining forest. The more traces, the more people will notice builderers.