Nepal was declared a secular state by the historic 'Declaration of the House of Representatives 2063' proclaimed on 4th Jyestha, 2063 BS.
There is many importance of religious tolerance because religious tolerance maintains peace, co-operation and unity among people. Secularism helps in the promotion of religious tolerance as it maintains religious equality and freedom.
According to the Interim Constitution of Nepal 2063 B.S , 'Nepal is an independent, indivisible, sovereign, secular, inclusion, federal, democratic republican state. 'This constitution has made a clear provision for religious freedom and tolerance in 'Right to Religion', Article 23.
Yes, walking through the streets of Kathmandu is like exploring a living museum as Kathmandu is full of temples, religious sites. The Pashupati temple is also popular for its religious value as well as beauty. Most of the tourists come to visit Kathmandu to see the Pasupathinath. Kathmandu Darbar square also adds beauty to the streets of Kathmandu. Rani pokhari, Dharara, Ghantaghar,etc are so beautiful that it makes streets of Kathmandu look more beautiful. Thus, it makes the tourists feel like exploring living museum.

Tolerance means capacity for recongizing and accepting religious or social characteristics that is different.

Religious tolerance refers to the ability to tolerate other religions.