Underground Valletta, Great Siege Square, Valletta, Malta View map

World renowned performer Thomas Bloch presents a exclusive recital on his glass harmonica inside a 16th century underground water cistern beneath the streets of Valletta. 

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2 Days in June

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This concert takes place inside one of the 16th century underground water cisterns of Valletta. World renowned performer Thomas Bloch presents a exclusive recital on his glass harmonica – a unique musical instrument, invented in 1761, that uses a series of glass bowls or goblets to produce musical tones by means of friction. This is the first time that the glass harmonica is presented in Malta by world renowned performer Thomas Bloch from France. The Malta International Arts Festival invites the audience to this unique concert, enhanced by the evocative setting of the underground site.

In collaboration with Heritage Malta.


When visiting Underground Valletta, visitors must read and adhere to these specific Underground Valletta terms and conditions. 

For your general information please note that:

  • Seating is on cushions on the floor.
  • Although handrails are in place, we regret that the site remains inaccessible to wheelchairs and persons needing walking aids.
  • Humidity levels are very high and therefore, some areas are slippery. For your safety, please wear closed, comfortable shoes and hold onto the handrails at all times. Visitors wearing high heels, sandals or flip flops will not be admitted.
  • Underground Valletta is a dark subterranean location. By buying a ticket you are warranting that you are in good health and are not subject to panic attacks or loss of balance due to claustrophobia or similar conditions which could put yourself or other visitors at risk of injury. 
  • For their own safety children under 12 years of age cannot be admitted to Underground Valletta.
  • Failure to arrive on time may result in refusal of entry, and tickets are not refundable and cannot be exchanged.