The Roman aqueduct Peña Cortada is the main attraction of Valencia’s La Serranía region. The aqueduct gives you the opportunity to walk through tunnels carved in rock, cross impressive bridges, and admire unique scenery of the area.
The colossal work of hydraulic engineering was built by the Romans in the 1st century AD. The aqueduct is one of the most important in the country and conserves sections over 28km. The most spectacular elements are the Rambla de Alcotas Bridge, the Barranco del Gato Bridge and the Peña Cortada in Calles, an impressive vertical cut followed by a gallery carved in the rock that can be visited.
References:The Broch of Clickimin is a large and well preserved, though somewhat restored broch near Lerwick. Originally built on an island in Clickimin Loch (now increased in size by silting and drainage), it was approached by a stone causeway. The water-level in the loch was reduced in 1874, leaving the broch high and dry. The broch is situated within a walled enclosure and, unusually for brochs, features a large 'blockhouse' between the opening in the enclosure and the broch itself. Another unusual feature is a stone slab featuring sculptured footprints, located in the causeway which approached the site. Situated across the loch is the Clickimin Leisure Centre.