Zwinger is a magnificent baroque palace located in Dresden, Germany. It was originally built in the early 18th century as an orangery and exhibition gallery for the enjoyment of the Saxon royal family. The palace is now one of the most famous landmarks in Dresden, known for its stunning architecture and beautiful gardens. It houses a number of museums, including the Old Masters Picture Gallery, the Porcelain Collection, and the Royal Cabinet of Mathematical and Physical Instruments.

Semperbau, on the other hand, is a section of the historic Semper Opera House in Dresden, designed by the renowned architect Gottfried Semper. The building is a prime example of Renaissance Revival architecture and is home to the opera and ballet company of the Saxon State Opera.

1. Interesting facts and description:

- Zwinger is named after the German word for \"enclosed courtyard,\" reflecting its original purpose as a place for courtly festivities.

- The Zwinger Palace suffered severe damage during World War II but has since been meticulously restored to its former glory.

- Semperbau is an iconic symbol of Dresden’s cultural heritage and is considered one of the most beautiful opera houses in the world.

- Both Zwinger and Semperbau are prime examples of the architectural beauty and cultural significance of Dresden.

2. Working time:

- Zwinger: The Zwinger complex is open daily from 10 am to 6 pm, with extended hours during the summer months.

Phone: +49 351 49142000

- Semperbau (Semper Opera House): The schedule for performances at the Semper Opera House can vary, so it’s best to check their official website for upcoming shows and ticket availability.

3. Ticket info and transportation:

- Zwinger: Ticket prices vary depending on which museums within the Zwinger complex you wish to visit. There are combination tickets available, and discounts for students and seniors. The Zwinger is easily accessible by public transportation, with bus and tram stops nearby.

- Semperbau: Tickets for performances at the Semper Opera House can be purchased online or at the box office. Prices can vary depending on the show and seating options. The opera house is centrally located in Dresden, making it easily reachable by public transportation.