passageways with the concourse. The westernmost passage, the Passage Sihlquai, lies to the west of the Sihl, which passes under the station from north to south at the same level as the passageways. Because of the presence of the river channel, the Sihlquai passage has no direct connection to the other passageways, but it connects to streets to the north and south of the station, and to all platforms except that serving tracks 21 and 22. At the lowest level, there are three groups of underground platforms. The most southerly are terminal tracks 21 and 22 of the station, with a single island platform, and accessible only to trains on the SZU's Uetliberg and Sihltal lines. To the north of these are two island platforms serving tracks 31 to 34, known as the Löwenstrasse station, which link to the station's western rail approaches, and to an eastern approach via the Weinberg tunnel from Oerlikon station. Some distance to the north of these are two further island platforms serving tracks 41 to 44, known as the Museumstrasse station, which also link to the station's western approaches, and to an eastern approach via the Hirschengraben Tunnel from Stadelhofen station. Facilities Underneath the Bahnhofplatz and the station is the large underground shopping centre called "ShopVille" of over 200 shops or other businesses. It benefits from the Swiss employment law rule that while generally labour on Sundays is not allowed, it is allowed in "centres of public transport". The huge underground "Rail City" is, therefore, usually bustling on Sundays even while the streets of Zurich are largely empty. Events take place regularly in the Haupthalle, including "open air" cinema; vegetable, flea and Christmas markets; and events such as skating, beach volleyball and the "warm up" for the Street Parade. Since 8 June 2009, Zürich HB has been the site of the first SBB Lounge. This waiting room was exclusively for holders of a first-class general subscription or a valid international first-class ticket or for frequent traveller program members of the Railteam partner railways. However, the lounge was closed in 2016. The station also has its own chapel, jointly run by the Evangelical Reformed and the Roman Catholic churches, but open to travellers of all denominations or religions. The chapel is located on the intermediate underground level, immediately below the Haupthalle. Station bells, clock and lights There are station bells above the rear exit of