1. Riga Old Town, also known as Vecriga, is the historical center of Riga, the capital city of Latvia. It is a UNESCO World Heritage Site known for its well-preserved medieval architecture, narrow cobblestone streets, and charming atmosphere. The Old Town is home to numerous landmarks such as the Riga Cathedral, St. Peter's Church, the House of the Blackheads, and the Swedish Gate. Visitors can explore the many museums, art galleries, cafes, and shops scattered throughout the area.

2. The working hours of individual attractions in Riga Old Town may vary, but many shops and restaurants are open daily. For specific information about opening hours and contact details, it is best to check the official websites of the attractions or contact them directly.

3. Entrance to Riga Old Town is free of charge as it is an open-air historic district. Visitors can easily reach the Old Town by walking from other parts of Riga's city center or by using public transportation. Buses, trams, and trolleybuses serve the area, and the Riga Central Station is within walking distance for those arriving by train. Ticket prices for public transportation can be found on the official website of Riga's public transportation system.