Summarize the following poem:

Because I have seen Bengal's face I will seek no more,

The world has not anything more beautiful to show me.

Waking up in darkness, gazing at the fig-tree, I behold

Dawn's swallows roosting under huge umbrella-like leaves.

I look around me and discover a leafy dome,

Jaam, Kanthal, Bat, Hijol and Aswatha trees all in a hush,

Shadowing clumps of cactus and zedoary bushes.

When long, long ago, Chand came in his honeycombed boat

To a blue Hijal, Bat Tamal shade near the Champa, he too sighted

Bengal's incomparable beauty. One day, alas, in the Ganguri,

On a raft, as the waning moon sank on the river's sandbanks,

Behula too saw countless aswaths bats besides golden ricefields

And heard the thrush's soft song. One day, arriving in Amara,

Where gods held court, when she danced like a desolate wagtail,

Bengal's rivers, fields, flowers, wailed like strings of bells on her feet.