1. Gran Vía is one of the most famous avenues in Madrid, Spain. It is known for its impressive architecture, historic theaters, and vibrant nightlife. The street was built in the early 20th century and has since then become a bustling center of entertainment, shopping, and cultural activity. Some interesting facts about Gran Vía include that it is over one kilometer long and features many iconic landmarks, such as the Callao Cinema and the Telefónica Building. The street also has a rich history and has been featured in many films and television shows, including Almodóvar’s \"Women on the Verge of a Nervous Breakdown\".

2. The working hours of various establishments on Gran Vía may vary, but generally, shops are open from 10 am to 9 pm, and restaurants and bars stay open until late at night. There is no specific phone number for Gran Vía as it is a public street, but individual businesses may have listings.

3. Gran Vía is easily accessible by metro, with several stations along the avenue. The closest metro stations are Santo Domingo, Callao, and Gran Vía. There is no need to purchase tickets to visit Gran Vía as it is a public street. However, some of the theaters and attractions along the avenue may require admission tickets.