I was told no place in the world where you have to drive up and down hundreds of meter in a city. View of California avenue. China Town gateway on sides.

TransAmerica building and ... forgot the one of the right but it's built in 1904.

Another view from Coit Tower, Golden Gate on the background

Bay Bridge from Coit Tower

View from Coit Tower

Bay Bridge on background

Part of China Town

Golden Gate bridge view from Marina

SF's cable car with Alcatraz on the back

View from Lombard, the only crooked road I know of. Alcatraz is on the back.

They call it "Tube", London's underground system. Impressive!

Another side of Westminster

London's underground system is probably the most extensive in the world. Definitely much more than Paris or NYC even probably Tokyo (I didn't explore much when I was there)

The famous Harrods

St.Paul - still under renovation

London is such a crowded and busy city. Can't believe the number of people walking on the streets

I was lucky it's such a perfect day

Another Tower Bridge picture

Stegasaurus - you can tell your son will completely surpass your knowledge one day --I hope so

T-rex. Another name I learned from Nathan