1. Melk Abbey, or Stift Melk, is a Benedictine abbey located in Melk, Vienna, Austria. It is situated on a rocky outcrop overlooking the Danube River, making it a prominent landmark in the region. The abbey was founded in 1089 and is one of the world's most famous monastic sites due to its stunning Baroque architecture and rich cultural heritage.

The abbey features a magnificent church with frescoes by Johann Michael Rottmayr, a library with countless manuscripts and rare books, and a vast marble hall adorned with intricate stuccowork. Visitors can also explore the abbey museum, which houses a collection of artifacts related to the history of the abbey and the region.

2. Melk Abbey is open to visitors daily from 9:00 am to 5:30 pm (April-October) and from 10:00 am to 4:00 pm (November-March). For more information, you can contact the abbey at +43 2752 5550.

3. Ticket prices for visiting Melk Abbey vary depending on the type of tour and access to different areas of the abbey. Guided tours are available for an extra fee. To reach Melk Abbey from Vienna, you can take a train to Melk (around a 1.5-hour journey) and then a short walk to the abbey. Alternatively, you can drive from Vienna in around an hour.