Conversation so far:
What is santiniketan in relation to Rabindranath Tagore?
In 1901 Rabindranath Tagore moved to Santiniketan to found an ashram with a marble-floored prayer hall—The Mandir—an experimental school, groves of trees, gardens, a library.

Question: what happened in 1901?
Self-contained rewrite: what happened in 1901 after Rabindranath Tagore moved to Santiniketan?