The symbol of San Francisco city, recognized by people all over the world.
This archaeological site is home to some of the largest ancient pyramids in the world.
The largest of the archaeological cities of the pre-Columbian Maya civilization and one of the new wonders of the world.
Is a Zapotec archaeological site and a UNESCO World Heritage site.
A Californian mansion, that was under construction continuously for 38 years, and is reported to be haunted.
Formerly known as the Sears Tower, this 108-story building is the tallest in the United States.