1. St. Nicholas Basilica, also known as Sint Nicolaasbasiliek, is a Catholic church in Amsterdam that was built between 1884 and 1887 in a neo-Baroque style. It is located in the center of the city, near the Amsterdam Central Station.

Some interesting facts about the Basilica are:

- The church was built to serve the growing Catholic community in Amsterdam, which had been persecuted for many years before the construction of the church.

- The Basilica is dedicated to Saint Nicholas of Myra, who is the patron saint of sailors, among other things.

- The interior of the church is decorated with many paintings, sculptures, and mosaics, some of which were created by famous Dutch artists.

- The church has a large organ that was built in 1889 and has more than 5000 pipes.

- The Basilica is also home to a museum that showcases the history and art of the church.

2. The working time of the Basilica varies depending on the day and season, but it is generally open to visitors from 10:00 am to 5:00 pm. The phone number of the church is +31 20 623 7766.

3. The entrance to the Basilica is free, but donations are welcome. Visitors can reach the church by taking a train to the Amsterdam Central Station and walking for a few minutes. There are also several tram and bus stops nearby. Parking is limited in the area, so it is best to use public transportation.