1. Maidan is a vast urban park in the heart of Kolkata, West Bengal, India. It is one of the largest green spaces in the city and serves as a popular recreational area for residents and tourists alike. The Maidan is also known as the \"lungs of Kolkata\" due to its large size and greenery.

One interesting fact about Maidan is that it covers an area of over 1,000 acres, making it one of the largest urban parks in Asia. The Maidan is home to several important landmarks and monuments, including the Victoria Memorial, Eden Gardens cricket stadium, and Fort William.

2. Maidan is open to the public throughout the day, but specific attractions within the park may have their own operating hours. It is advisable to visit during the daytime for safety reasons. Contact information for Maidan is not readily available as it is a public park.

3. Maidan is a public park and does not require any entrance fee or ticket for entry. The park is easily accessible by public transportation such as buses, trams, and taxis. Visitors can also reach Maidan by taking the Kolkata Metro to nearby stations like Park Street or Esplanade.