Chalkis is a city located on the island of Euboea in Greece. It is known for its rich history, dating back to ancient times when it was a significant center for trade and culture. The city is situated at the narrowest point of the Euripus Strait, which separates Euboea from the mainland of Greece. Today, Chalkis features a mix of historical sites and modern amenities. Visitors can explore ancient ruins, such as the Roman aqueduct and the Byzantine castle, while enjoying the vibrant waterfront and local cuisine. The city serves as a gateway to the beautiful landscapes of Euboea.