One of the A Coruña's most interesting monuments, San Anton castle (Castillo de San Antón) in A Coruña was constructed during the 16th and 17th centuries. A fortress built on a small island in the bay to defend the city against attacks coming from the sea, it effectively defended the entrance to the city against the English assault led by Francis Drake in 1589. There are some lovely collections of Celtic jewellery that were found on archaeological digs in Galicia on display inside the castle today.
Krickenbeck moated castle is one of the oldest on the lower Rhine. Its history dates back to the year 1104, when the castle was first mentioned. It is unclear why the old castle, which was certainly inhabited by Count Reginar, was abandoned or destroyed. In the mid-13th century the castle was moved to the current location. At the end of the 14th century the new castle belonged to the Counts of Kleve.
Johann Friedrich II of Schesaberg converted the castle into a Baroque mansion between 1708-1721. On September 7, 1902, a fire destroyed the entire mansion. From 1903 to 1904, a three-winged castle was built in the Neo-Renaissance style. Today Krickenbeck is a conference center.