Clarke begins to feel sick in the City of Light and the people around her begin to notice her in episode #316 "Perverse Instantiation, Part 2".
Hawkman lands Kendra Saunders on a rooftop after taking her in episode #208 "Legends of Today".
The police corner Geomancer in a square and Jay Garrick arrives on Velocity 7 in episode #213 "Welcome to Earth-2".
Black Siren destroys the Mercury Labs building in episode #222 "Invincible".
Barry and Jesse chase the two criminals outside and up a building but Barry is trapped in a mirror after having to catch Jesse in episode #304 "The New Rogues".
The car crash at the start of episode #201 "A New Day in the Old Town" was shot on the Cordova side of the building.
Agent Duram and GDD Director Singh chat on these steps in episode #111 "Retribution".
Source: Visit Caprica