Mirror, mirror on the wall, who has San Francisco's biggest tower of all?

The honor now belongs to Marc Benioff, CEO of Salesforce.

Earlier this month, Salesforce Tower hoisted its final beam into place. The building is expected to be complete in July, and, at a $1 billion price tag, will be the most expensive and tallest building in San Francisco. It's also chock full of technology.

Business Insider took a long around inside during a ceremony for the final phase of construction earlier this month.

The construction of the edifice has provided fodder for a seemingly-constant stream of jokes about the tower's size, some good, some less so.

For instance, even the Salesforce web page dedicated to the tower has a couple. Like this one:

That web page helps market the building. The company has leased out about 70% of the tower in addition to using it to house up to 10,000 of its own employees.

But the top floor, the 61st, will be reserved as a community space and an event space, available to non-profits and others to rent and use. No one will have offices up there, not even Salesforce CEO Marc Benioff. There's been some witticisms about that, too.

But the best joke has to be a cartoon from KQED media station tweeted by Benioff. While 61 floors is relatively tiny compared to the tallest buildings in cities like New York or Chicago, it is now San Francisco's newest landmark, supplanting the Transamerica building, which had been the tallest building in that city since 1972.