Austin Klar, a former lawyer turned San Francisco real-estate developer, explains the brick circles embedded in city streets. Each marks an underground water tank from the 1800s used for firefighting. The city has over 170 of them, some holding two swimming pools' worth of water, costing more than $1 million each to build.
Spend some time walking around the streets of San Francisco and you will probably notice a bunch of these brick circles lining the streets. What the heck are those? This is Austin Klar, your lawyer turned real estate agent, real estate developer in San Francisco, and these brick circles actually mark the locations of massive underground water storage tanks, which firefighters today use to fight fires. There are more than 170 of these throughout the city. They date back to the 1800s. Some of them are so big they hold enough water to fill up 2 swimming pools. Each of them costs over $1 million to make. Follow me for more Bay Area history.
