The WLS holds a fun and interesting lecture for adults every month except in summer, followed by the opportunity to visit the domes and look through the telescopes with a WLS tour guide. The topic of this evening is not yet known. 

Location: Old Observatory, Sterrenwachtlaan 11, 2311 GP Leiden  

Time: 20.00 - 22.30 hrs. 

Entrance: € 4,- p.p. including coffee, tea or lemonade. Tickets can be bought at the door. You can register via this link.  

For disabled people, access to the Leiden Observatory can be arranged by appointment, (indicate when registering or send an e-mail well in advance). A lift is available inside the building. If the mobile ramp at the front door, to the lift is needed please also indicate this when registering so that we can take it into account. Unfortunately, it is not possible for disabled people to visit the domes: they can only be reached via steep and fairly narrow and winding stairs.