1. Castelo de Sao Jorge (St. George’s Castle) is a historic castle located in the heart of Lisbon, Portugal. It dates back to the 11th century and was built by the Moors. The castle was later conquered by Christians and used as a royal palace until the 16th century. The castle offers stunning views of the city and the Tagus River. It also includes a museum showcasing artifacts and exhibits from the castle’s history.

2. Castelo de Sao Jorge is open every day from 9am to 9pm from March to October and from 9am to 6pm from November to February. Their phone number is +351 218 800 620.

3. Admission tickets are available on-site and online. Prices vary depending on age and whether you visit during peak or off-peak hours. Children under 10 years old have free admission. The castle is accessible by foot, by taking tram 28, or by taking bus number 737 from Praça do Comércio or the Martim Moniz metro station.