1. Rotterdam City Hall, also known as Stadhuis, is the seat of government for the city of Rotterdam, Netherlands. It is located in the city center, on the Coolsingel street.

The building is known for its unique architectural style. It was designed by architects Henri Evers and Jacob Oud and completed in 1920. The architecture reflects the influence of both the Art Nouveau and Rationalist movements of the time. The exterior features intricate brickwork and decorative elements, while the interior is characterized by marble and stained glass.

One interesting fact about Rotterdam City hall is that it was heavily damaged during World War II. However, it was reconstructed and reopened in 1953, maintaining its original design.

2. The working hours of Rotterdam City Hall may vary, so it is best to check the official website or contact them directly for the most up-to-date information. The phone number for Rotterdam City Hall is +31 10 267 1625.

3. Entry to Rotterdam City Hall is free. There are no specific ticket requirements or fees to visit the building. The city hall is easily accessible by public transportation, including trains, trams, and buses. The nearest metro station is Stadhuis, which is directly in front of the building.