Madrid & The Canary Islands, very nice city and near area.
The Canary Islands - are a Spanish archipelago located just off the northwest coast of mainland Africa, 100 kilometres (62 miles) west of the southern border of Morocco. The archipelago's beaches, climate and important natural attractions, especially Maspalomas in Gran Canaria and Teide National Park and Mount Teide (a World Heritage Site) in Tenerife (the third tallest volcano in the world measured from its base on the ocean floor), make it a major tourist destination with over 12 million visitors per year, especially Tenerife, Fuerteventura, Gran Canaria and Lanzarote. For this reason, two professional observatories, Teide Observatory on the island of Tenerife
Segovia - An aqueduct is a watercourse constructed to convey water. In modern engineering, the term aqueduct is used for any system of pipes, ditches, canals, tunnels, and other structures used for this purpose