1. Piata Mare, also known as the Great Square, is the largest square in Sibiu, Romania. It is a historic and picturesque square surrounded by colorful buildings that date back to the 14th century. The square is a popular gathering place for locals and tourists, and is often the site of events, festivals, and markets.

2. The Great Square is open to the public all day, every day. While there is no official phone number for the square itself, you can contact the Sibiu Tourist Information Center at +40 269 223 624 for more information.

3. There is no admission fee to visit Piata Mare, as it is a public square. Sibiu is a walkable city, so it is easy to reach the square on foot from most parts of the old town. Alternatively, you can take a taxi or use public transportation to get to Sibiu and then walk to the Great Square.