Michalská brána
The last gate standing from Bratislava's original 13th-century city walls, Michael's Gate was rebuilt in the Baroque style in 1758; that's when the onion dome was added. Look up to the top of the tower to see the dome, as well as a statue of the archangel Michael slaying a dragon; or look down to see a bronze plate showing the distances to different world capitals. Also of note is the remarkably skinny house on the northwest side of the gate, now a fast-food joint. Normally, for a small fee, you can climb the tower for great views over the city (and visit the small Museum of Arms inside), but as the gate is currently closed for reconstruction, you'll just have to admire it from the outside.