Downtown San Diego is on the east shore of the San Diego Bay. No beach there, but the Embarcadero Marina Parks South has a good fishing pier (no fee, no license needed) where you can sit and watch all sort of boats and the patrolling sea gulls (and pelicans and other water birds). Occasionally the Maritime Museum would stage 'Cannon Battles' on the bay among a few of their tall ships. The tips of Broadway Pier and Navy Pier (where the USS Midway is at) offer great vintage points for watching that.
|California Tower at the Museum of Man viewed from the Prado|
|Sunset from Top of the Hyatt Lounge|
There are many good places to catch a spectacular sunset in the City of San Diego, the Top-of-the-Hyatt Lounge on the 40th floor of the Manchester Grand Hyatt Hotel in the Marina District is one of them. I should warn you that a can of Diet Coke there costs $4, but you don't have to buy anything if you just stand in the hallway...