1. St. Lambertus Cathedral, located in Düsseldorf, Germany, is a Roman Catholic church known for its unique architecture and rich history. The church dates back to the 14th century and is considered a prime example of Romanesque architecture. One of the most fascinating features of the cathedral is the twisted spire on the southern tower, which is said to have been caused by the heat from a fire in the 19th century.

2. St. Lambertus Cathedral is open to visitors daily, typically from around 9:00 AM to 6:00 PM. It is advisable to check the official website or contact the cathedral directly for the most up-to-date information on opening hours. A contact phone number, if available, can be found on the official website as well.

3. Admission to St. Lambertus Cathedral is usually free, but donations are appreciated to help with the maintenance of the historic building. The cathedral is easily accessible by public transportation, such as trams and buses, in the city center of Düsseldorf. Visitors can also choose to walk to the cathedral from nearby attractions and landmarks.