When you walk near San Francisco it is a good opportunity to visit Palo Alto, Mountain View and Silicon Valley, where the largest IT companies of today such as Google, Microsoft, etc. are located. What to visit nearby: 1. Hoover Tower 2. Rancho San Antonio Preserve 3. Googleplex 4. Microsoft

Places of Interest in Boston: 1. Boston Harbor 2. TD Garden 3. Freedom Trail 4. Museum of Fine Arts, Boston 5. Boston Public Garden 6. USS Constitution Museum 7. Children's museum 8. Quincy Market 9. Fenway Park 10. Faneuil Hall Marketplace 11. Copley Square 12. Trinity Church 13. Harvard Art Museums 14 Harvard

Places of Interest in Cali: 1. Christ the King 2. Cali Zoo 3. Hill of the three crosses 4. Cayzedo Square 5. Cali Tower 6. Eco Park Lake Las Garzas Recommendation: On Wednesdays and Saturdays you can take advantage of various places to dance Salsa.