The Clock Tower in the Old Post Office building was reputed to have one of the best views in downtown DC. It’s only three blocks away, so it was time to check it out. Great view! The clock tower has an observation deck on the 12th floor with unobstructed views on four sides, you can look down to the capital, overlook the mall, see the monuments, and see the National Cathedral in the distance. This is now on my list of must-see places. I’ll definitely be going back.