Bing found the following results
Calais - Wikipedia
A first-timer's guide to Calais, France - Lonely Planet
Calais | History, Geography, Map, & Population | Britannica
Top Ten things to do in Calais town - The Good Life France
Calais – Travel guide at Wikivoyage
Calais travel - Lonely Planet | France, Europe
15 Best Things to Do in Calais (France) - The Crazy Tourist
Guide to Calais – best things to see, do and eat!
THE 15 BEST Things to Do in Calais - Tripadvisor
Guide to Calais - A Great City - Mary Anne's France