Getting to the Observatory
The Observatory is located on the 4th floor of the Physics Building. Start at the fountain of the Science Complex and face the two domes. Walk to the arc under the domes and go in the door on the left side (Physics side). Immediately go up the stairs to your right, all the way to the 4th floor. If the door at the top of the stairs is closed, you may open it. The observatory is the door on your left.
Note: there is no way to access the Observatory via elevator. All elevators in the building only go to the third floor.