A building, or edifice, is a structure with a roof and walls standing more or less permanently in one place, such as a house or factory. Buildings come in a variety of sizes, shapes, and functions, and have been adapted throughout history for a wide number of factors, from building materials available, to weather conditions, land prices, ground conditions, specific uses, and aesthetic reasons.[from wikipedia]

Walks around San Francisco based on book self-guided tours.

All have been decomission over time

Litter consists of waste products that have been discarded incorrectly, without consent, at an unsuitable location. Litter can also be used as a verb; to litter means to drop and leave objects, often man-made, such as aluminum cans, paper cups, fast food wrappers, cardboard boxes or plastic bottles on the ground, and leave them there indefinitely or for other people to dispose of as opposed to disposing of them correctly.[from wikipedia]

Mini parks are ignificantly smaller than a normal park.

The many fine museums of San Francsico.

Park And Recreation administered open land

This city has many well known parades.

Parklets are intended for people. Parklets offer a place to stop, to sit, and to rest while taking in the activities of the street. In instances where a parklet is not intended to accommodate people, it may provide greenery, art, or some other visual amenity. A parklet may accommodate bicycle parking within it, or bicycle parking may be associated with it.[from wikipedia]

Francisco has so many piers it is without peer

Privately owned but publically accessable parks add to the open spaces of the city.

A skyline is the horizon created by a city's overall structure, or by human intervention in a non-urban setting or in nature. City skylines serve as a kind of fingerprint as no two skylines are alike. For this reason, news and sports programs, television shows, and movies often display the skyline of a city to set a location[from wikipedia]

Stairs are a structure designed to bridge a large vertical distance between lower and higher levels by dividing it into smaller vertical distances. This is achieved as a diagonal series of horizontal platforms called steps which enable passage to the other level by stepping from one to another step in turn.[from wikipedia]

Retail markets and shops have a very ancient history, dating back to antiquity. Some of the earliest retailers were itinerant peddlers. Over the centuries, retail shops were transformed from little more than "rude booths" to the sophisticated shopping malls of the modern era.[from wikipedia]

Transport or transportation is the movement of humans, animals and goods from one location to another. In other words the action of transportation is defined as a particular movement of an organism or thing from a point A to the Point B.[from wikipedia]

Treasure Island is an artificial island in the San Francisco Bay and a neighborhood in the City and County of San Francisco. Built in 1936-37 for the 1939 Golden Gate International Exposition, the island's World's Fair site is a California Historical Landmark.[from wikipedia]