A postcard on the Lion Rock or Sigiriya (සීගිරිය). This ancient palace is located in Matale District, Central Province. It is included in UNESCO World Heritage List under the name "Ancient City of Sigiriya." Thanks Mikram again.
A Rs15.00 waterfall stamp and two Rs5.00 stamps on World Post Day and Louis Braille were used. The postmarks were also too blur to recognize them.