Baha'i pilgrims also travel there to pray and meditate at the Shrine of the Báb located in the gardens. Why are these two cities holy to the Baha'is? What is the significance of pilgrimage here?

Baha’is and the world over will celebrate the Bicentenary of the Birth of the Bab Oct. 27. The Bab (the Gate in Arabic) heralded the coming of the founder of the Baha’i Faith, ...