Fort Rhijnauwen was built between 1868 and 1875 as part of the New Dutch Water Defence Line. Because of its architectural style and good state of preservation, the fort is historically unique. Due it was closed to the general public for years it became a paradise for many endangered plants and animals. There are also weasels, foxes, roe, grass snakes and many varieties of butterflies. In winter, hundreds of bats hibernate in the fort. The fort consists of bombproof shelters, powder magazines, barracks, flank defences, group shelters and a large practice and parade square. Surrounding the complex is a double moat. Today, the fort can be visited on a guided tour.References:
The Odeon of Herodes Atticus is a stone theatre structure located on the southwest slope of the Acropolis of Athens. It was built in 161 AD by the Athenian magnate Herodes Atticus in memory of his wife, Aspasia Annia Regilla. It was originally a steep-sloped theater with a three-story stone front wall and a wooden roof made of expensive cedar of Lebanon timber. It was used as a venue for music concerts with a capacity of 5,000. It lasted intact until it was destroyed and left in ruins by the Heruli in 267 AD.
The audience stands and the orchestra (stage) were restored using Pentelic marble in the 1950s. Since then it has been the main venue of the Athens Festival, which runs from May through October each year, featuring a variety of acclaimed Greek as well as International performances.