You should have the following documents which is generic when Applying to the United Kingdom as a visitor: a letter from your employer granting leave of absence from your job for a specified period. 

Estonia Tourist Visa category The one who wishes to travel Estonia has to identify Tourist visa category the individual belongs to before applying the Visa as its required to produce specific document in front of embassy

Visitors’ visas are for international travellers (citizens of other countries) who have permanent residence outside South Africa and who wish to visit the country on a temporary basis for tourism or business purposes for a period of 90 days or less

SPAIN VISA APPLICATION TEMPLATE Visa applicants must appear in person. No visas will be processed by email or mail. Applications will be accepted on a first come first serve basis.

WELCOME TO PARIS PAX World Tourism Organization (WTO) has rated Paris as the most foreign tourists in the world. Visa is mandatory for pax to get into Paris but Americans has exception on visa to tour the fair city of lights.

SCHENGEN VISA OR TOURIST VISA TO AMSTERDAM If you want to visit Amsterdam(Netherlands) for a maximum of 90 days you may need a short-stay Schengen visa. This depends on your nationality.(Click here for Country List Whose nation require a Visa)