1. Alexander Nevsky Cathedral in Tallinn is a stunning Orthodox cathedral that was built in the late 19th century, during the Russian Empire’s rule over the area. The cathedral is known for its iconic onion domes and its impressive architectural design, which is a mix of traditional Russian Orthodox and Gothic styles.

2. The working hours of Alexander Nevsky Cathedral in Tallinn are typically from 8:00 AM to 6:00 PM. Unfortunately, there is no readily available phone number for the cathedral, as it is primarily a place for worship and tourism.

3. Admission to Alexander Nevsky Cathedral is free of charge, although donations are welcomed. The cathedral is easily accessible by public transportation, with several bus and tram stops nearby. It is also conveniently located in the heart of Tallinn’s Old Town, making it easy to reach on foot.