The castle was originally built in the 13th century by Alexander II of Scotland to guard the area against possible Viking invasions ... Accessible only by an old stone footbridge, it's easy ...

Today, Dublin Castle offers a mix of old and new. It serves many functions ... If you'd like more historical background and access to the Viking excavation and chapel royal, opt for a guided ...

Comfortable Viking buses took guests on a full-day tour of Heidelberg, home of Germany’s oldest university. In addition to stunning town views from the 12th-century Heidelberg Castle ...