Royal Observatory of Belgium
Observatoire royal de Belgique
Koninklijke Sterrenwacht van België
Royal Observatory of Belgium (ROB)
Avenue Circulaire -3- Ringlaan
Brussels - Belgium
From abroad. Arrive by high-speed Eurostar or ICE in Brussels South Station (Midi/Zuid) or fly in to Brussels Airport (IATA: BRU). Note there is also Brussels South Charleroi Airport (IATA: CRL) which is further away.
Locally. The Royal Observatory (ROB) is located about 5km south of the city center (the pentagon shape on the left). Various buses & trams connect the city center to ROB. The exact address is "Avenue Circulaire 3, 1180 Uccle".
When you reach the entrance of ROB, then just proceed straight to the main building in front.
Follow the same (exactly South!) direction through the building till the end of the corridor and then turn left. The SWT will take place in the "Meridian" meeting room, first down and then up the stairs.