One of these subsequent events is organogensis, which gastrulation makes possible by allowing the different germ layers to differentiate into major body tissues and form functioning organs. The germ layers that are established during gastrulation are the endoderm, mesoderm, and ectoderm.
Eilean Donan Castle is a medieval castle on the small island of Eilean Donan in Loch Duich in the western Highlands of Scotland.The island is dominated by its famous picturesque castle.ilean Donan Castle is a medieval castle on the small island of Eilean Donan in Loch Duich in the western Highlands of Scotland.
1 Conwy Castle was built between 1283 and 1287. 2  Construction of the Conwy town walls were constructed when the castle was nearing completion. 3  The castle and town were designed to function as one, the perimeter walls bonding the town to the castle. Construction of the Conwy town walls were constructed when the castle was nearing completion. 2  The castle and town were designed to function as one, the perimeter walls bonding the town to the castle. 3  Conwy Castle (and Harlech Castle and many others) were designed by Edward Iâs master-builder, James of St. George.