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 Some of Europeâs best-preserved medieval towns: Brasov, Sibiu, Sighisoara. 2  Bran Castle (also known as Draculaâs Castle), built in 1377. 3  Rasnov Fortress â built in the 1300s by the Teutonic Knights to protect Transylvania against the Tartars and the Turks. 4  The Saxon fortified churches at Biertan, Calnic, Harman, Darjiu,