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The garden hosts different species of flowers and trees around the world. The oldest botanical garden in the Netherlands, it's part of the University of Leiden.
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Academy Building
The old university building still used for ceremonies and a few studies.
National Museum of Antiquities
This is a traditional museum on the history of people. Includes an outstanding collection of ancient Egyptian antiquities, and a small temple that was given to the Netherlands by the Egyptians for their help with the Aswan monuments transfer project. It also features an exhibition on the archeological history of the Netherlands including dug-up burial treasures and the like. Free audioguide available in major languages.
A nice-looking 15th-century building (despite being a jail). It is now a part of the university.
It is the only surviving 17th-century example in the Netherlands of a building that was designed as a public library.
The Church of St. Peter (the patron saint of the city) is a 16th-century church, in late-Gothic style. A feature which Americans will find interesting is that this church is associated with the Pilgrim Fathers, whose leader John Robinson, lived in the nearby Pieterskerkchoorsteeg (house is marked with a plaque). The church features a small exhibition on the Pilgrims in Leiden. People buried here include the physician Boerhaave, the painter Jan Steen (of Rijksmuseum fame) and the Pilgrim leader Robinson.
Wall Poems
This site suggests a rather unusual way of sightseeing: walk and read poems written on the walls. More than 100 poems from all over the world are painted on the walls of houses. The poems are written in various languages, but there is also a small plaque beneath an each piece with Dutch and English translations. This project was conducted between 1992 and 2005. One can check with the map.