The Paro Tshechu is held every spring and is one of the most colorful and significant events in Paro Dzongkhag (district).
The Tsehchu is considered a major attraction and people travel from neighboring districts to participate in the festivity. Early in the morning on the last day of the celebration the monks display a gigantic thangkha (embroidered painting) , the Guru Throngdel, inside the dzong. Thongdrols are especially impressive examples of Buddhist art and never fail to amaze viewers. They are considered so sacred that simply seeing a Thongdrol is said to cleanse the viewer of sin.
- See more at: http://www.tourism.gov.bt/activities/paro-tshechu#sthash.Sgq96x7V.dpuf