Visiting and staying in Warsaw directly depends on the country of origin of the arriving foreign national.
European Union (EU) citizens and the family members who are not citizens of the EU are permitted to stay for a period of 3 months within the borders of the Member State (i.e. Poland), without the obligation to register their visit with the proper authorities.
Family members who are not European Union citizens themselves and who accompany or join him/her in the host Member State have the right to enter any EU Member State with a valid passport. However they are required, at all times, to be in the possession of that valid passport or any other official document which validates their identity and the citizenship. The host Member State may require you to report your presence within its territory in reasonable and non-discriminatory period of time. Failure to comply with this requirement may make you liable to proportionate and non-discriminatory sanctions, excluding imprisonment or deportation.
If the residence in the territory of the Republic of Poland lasts for more than 3 months, the Union citizen shall be obliged to register his/her residence and the family member who is not a Union citizen shall to obtain the Union citizen family member residence card.
European Union citizen has the right to reside in the territory of the Republic of Poland for a period longer than 3 months if he/she meets one of the following conditions: