You can start your walking route from Chinatown! The main tourist road to peek a good look is Grant Avenue. After that, you will continue walking on Grant Avenue where you can find St. Mary's square. From there you will go to Union Square where you can find the main shopping areas of San Francisco. After that head down to the Yerba Buena Gardens where you take a breath and relax. Right next to the garden is located the Moden Museum of Arts (SFMOMA). You will visit the Salesforce park and from there you see the Salesforce tower and the Millennium tower the tallest buildings in San Francisco. You will go to Market Street and walk it until you reach Powel street and then take the cable car. You will go up to Powel Street I recommend until the end of the road where you can see how the cable cars turn around. A few blocks away you can find the famous Lombard Street. In the end, you can go to the Pier and the Fisherman's Wharf.
Grant Avenue in San Francisco, California, is one of the oldest streets in the city's Chinatown district. It runs in a north–south direction starting at Market Street in the heart of downtown and dead-ending past Francisco Street in the North Beach district. It resumes at North Point Street and stretches one block to The Embarcadero and the foot of Pier 39. — Wikipedia
Saint Mary's Square is a park and urban square across California Street from Old St. Mary's Cathedral in San Francisco's Chinatown, in the U.S. state of California. — Wikipedia
Union Square is a 2.6-acre public plaza bordered by Geary, Powell, Post and Stockton Streets in downtown San Francisco, California. "Union Square" also refers to the central shopping, hotel, and theater district that surrounds the plaza for several blocks. — Wikipedia
Yerba Buena Gardens is the name for two blocks of public parks located between Third and Fourth, Mission and Folsom Streets in downtown San Francisco, California. The first block bordered by Mission and Howard Streets was opened on October 11, 1993. The second block, between Howard and Folsom Streets, was opened in 1998, with a dedication to Martin Luther King Jr. by Mayor Willie Brown. A pedestrian bridge over Howard Street connects the two blocks, sitting on top of part of the Moscone Center convention center. — Wikipedia
The San Francisco Museum of Modern Art (SFMOMA) is a modern and contemporary art museum located in San Francisco, California. A nonprofit organization, SFMOMA holds an internationally recognized collection of modern and contemporary art, and was the first museum on the West Coast devoted solely to 20th-century art. The museum's current collection includes over 33,000 works of painting, sculpture, photography, architecture, design, and media arts, and moving into the 21st century. The collection is displayed in 170,000 square feet (16,000 m2) of exhibition space, making the museum one of the largest in the United States overall, and one of the largest in the world for modern and contemporary art. — Wikipedia
The Salesforce Park is a beautiful stretch of green in the middle of the city. It has several different gardens with plants and trees from around the world. A great place for a relaxing stroll.
Salesforce Tower, formerly known as Transbay Tower, is a 61-story skyscraper at 415 Mission Street, between First and Fremont Street, in the South of Market district of downtown San Francisco. Its main tenant is Salesforce, a cloud-based software company. The building is 1,070-foot (326 m) tall, with a top roof height of 970 feet (296 m). As of 2022, Salesforce Tower is the tallest building in San Francisco, and the second-tallest building west of the Mississippi River after the 1,100 feet (335 m) Wilshire Grand Center in Los Angeles. — Wikipedia
One Bush Plaza also known as the Crown Zellerbach Building is an office building in the western United States in San Francisco, California. Located on Bush Street and Battery Street at Market Street in the Financial District, the 20-story, 308-foot (94 m) building was completed in 1959. — Wikipedia
Market Street is a major thoroughfare in San Francisco, California. It begins at The Embarcadero in front of the Ferry Building at the northeastern edge of the city and runs southwest through downtown, passing the Civic Center and the Castro District, to the intersection with Portola Drive in the Twin Peaks neighborhood. — Wikipedia
The San Francisco cable car system is the world's last manually operated cable car system and an icon of the city of San Francisco. The system forms part of the intermodal urban transport network operated by the San Francisco Municipal Railway. Of the 23 cable car lines established between 1873 and 1890, only three remain : two routes from downtown near Union Square to Fisherman's Wharf, and a third route along California Street. While the cable cars are used to a certain extent by commuters, the vast majority of the millions of passengers who use the system every year are tourists, and as a result, the wait to get on can often reach two hours or more. San Francisco's cable cars are listed on the National Register of Historic Places and are designated as a National Historic Landmark. — Wikipedia
Lombard Street is an east–west street in San Francisco, California that is famous for a steep, one-block section with eight hairpin turns. Stretching from The Presidio east to The Embarcadero, most of the street's western segment is a major thoroughfare designated as part of U.S. Route 101. The famous one-block section, claimed to be "the crookedest street in the world", is located along the eastern segment in the Russian Hill neighborhood. It is a major tourist attraction, receiving around two million visitors per year and up to 17,000 per day on busy summer weekends, as of 2015. — Wikipedia
Fisherman's Wharf is a neighborhood and popular tourist attraction in San Francisco, California. It roughly encompasses the northern waterfront area of San Francisco from Ghirardelli Square or Van Ness Avenue east to Pier 35 or Kearny Street. The F Market streetcar runs through the area, the Powell-Hyde cable car line runs to Aquatic Park, at the edge of Fisherman's Wharf, and the Powell-Mason cable car line runs a few blocks away. — Wikipedia
Pier 39 is a shopping center and popular tourist attraction built on a pier in San Francisco, California. At Pier 39, there are shops, restaurants, a video arcade, street performances, the Aquarium of the Bay, virtual 3D rides, and views of California sea lions hauled out on docks on Pier 39's marina. A two-story carousel is one of the pier's more dominant features, although it is not directly visible from the street and sits towards the end of the pier. The family-oriented entertainment and presence of marine mammals make this a popular tourist location for families with kids. — Wikipedia