The Old Botanical Garden is an idyllic oasis at the heart of downtown Zurich. Its history dates back to the year 1837. Today it is home to various old trees that give the garden its enchanting aura.
The mediaeval herb garden, the “Gessner Garden”, is located on a hill and offers insight into 16th century knowledge of medicinal plants. The palm house is a protected monument from the 19th century and today is predominantly used for concerts, theatre and exhibitions.References:
The city walls of Avila were built in the 11th century to protect the citizens from the Moors. They have been well maintained throughout the centuries and are now a major tourist attraction as well as a UNESCO World Heritage Site. Visitors can walk around about half of the length of the walls.
The layout of the city is an even quadrilateral with a perimeter of 2,516 m. Its walls, which consist in part of stones already used in earlier constructions, have an average thickness of 3 m. Access to the city is afforded by nine gates of different periods; twin 20 m high towers, linked by a semi-circular arch, flank the oldest ones, Puerta de San Vicente and Puerta del Alcázar.