1. Potala Palace is a historic fortress complex located in Lhasa, Tibet. It was once the residence of the Dalai Lamas and is considered one of the most iconic landmarks in Tibet. The palace was built in the 7th century and has been expanded and renovated several times over the years. It stands at a height of 3,700 meters above sea level and has 13 floors and over 1,000 rooms. The palace complex also includes numerous chapels, prayer halls, and courtyards.

Some interesting facts about Potala Palace include:

- The palace was named after a mythical mountain in India where the Buddha is believed to have lived.

- There are over 200,000 statues and artworks housed within the palace complex.

- The Potala Palace was added to the UNESCO World Heritage list in 1994.

- The palace is built entirely without nails or wood, using only stone, wood, and mud.

- The palace was damaged during the Cultural Revolution in China, but has since been restored to its former glory.

2. The Potala Palace is open daily from 9:00 am to 4:00 pm (May to October) and from 9:30 am to 3:00 pm (November to April). The palace is closed on Tuesdays. To ask about phone numbers, it is better to check the palace website beforehand.

3. To visit the Potala Palace, tourists need to purchase a ticket. Tickets can be bought in advance online or at the ticket office near the palace entrance. Ticket prices vary depending on the time of year but generally start at around 200 CNY (about 30 USD) per person. It is best to book in advance as there is a limit on the number of tickets sold daily. The palace can be accessed by foot or taxi.