
Photo: צלמי המושבה, CC BY-SA 3.0 via Wikimedia Commons
A large water reservoir just outside the Old City. It likely dates to the time of Herod, and has been remodeled since then. Now, it is empty of water, and used to hold concerts and other large events.
The Sultan's Pool is an ancient water basin to the west side of Mount Zion, Jerusalem.
© OpenStreetMap contributors
Between 1948 and 1967, West Jerusalem and Mount Zion were under Israeli control, but the only access between them was vulnerable to Jordanian sniper fire from the Old City walls. To avoid this fire, a secret tunnel was dug so that Mount Zion could be safely supplied. Part of the tunnel was neglected and destroyed after 1967, but the remainder has been restored and you can walk up the mountain through it.
The first neighborhood of Jerusalem to be built outside the Old City. The Mishkenot Sha'ananim housing project and the landmark windmill were finished in 1860; the rest of the neighborhood was built in the 1890s. Nowadays the neighborhood is quaint, beautiful, surrounded by parkland, and with a direct view of the Old City walls. It's a delightful neighborhood to walk around, both during the day and at night.
Gehenna
According to the Bible, this valley was once used for child sacrifice. Due to its association with evil, Gehinnom/Gehenna later became a name referring to Hell. Now, it is a pleasant though somewhat neglected park. If you come at night, you will see the cliffs lining the valley lit up in a variety of colored lights.
A museum dedicated to the life and legacy of Menachem Begin, the first member of an opposition party to be elected as Israeli Prime Minister.
Named after Teddy Kollek, Jerusalem mayor from 1965-1993, this park is located in the valley just below Jaffa Gate. The highlight is a fountain with 256 water spouts which performs a choreographed water show once every 2 hours (check the schedule before coming); you are encouraged to run through the fountain on a hot day. There is also a constantly running water feature which is good for cooling off at any time. There's also some archaeology here, but it's unimportant by Jerusalem standards.
Liberty Bell Park
The most visited park in Jerusalem, overlooking Mount Zion and the Old City. It features a replica of Philadelphia's Liberty Bell with the Biblical inscription - "Proclaim liberty throughout all the land unto all the inhabitants thereof".