In another 15 minutes, they plan to eat lunch at a magnificent old hotel in the park.
It was built in 1927 and has a great view.
They wanted to stay there, but they couldn't get reservations.
To get a room at that hotel, you usually need to make reservations several months in advance.
They plan to stay in the park until around 4 o'clock .
By then they will have been in the park for nearly 5 hours.
Then they'll get back into the car and drive back to San Francisco.
They plan to eat dinner somewhere along the way.
If the traffic isn't too bad, they should be back in San Francisco by 10 o'clock.
Early tomorrow morning they are going to cross the Golden Gate Bridge and go north along the coast.
From some places you can look out on the ocean and see whales and other sea life.
Christina has never seen a whale before, so she's looking forward to it.
And tomorrow night they have something special planned.
They are going to watch a baseball game.
Christina has never seen a baseball game, but she has heard that it is very popular in the US.
And the San Francisco baseball team is one of the best.
