http://mentalfloss.com/article/556629/facts-about-notre-dame-cathedral

1. A PAGAN CITY LIES BELOW THE CATHEDRAL.

2. THERE'S A "FOREST" IN ITS ROOF.

The cathedral contains one of the oldest surviving wood-timber frames in Paris, involving around 52 acres of trees that were cut down in the 12th century. Each beam is made from an individual tree. For this reason, the lattice of historic woodwork is nicknamed "THE FOREST."

1. ALL ROADS LEAD TO NOTRE-DAME DE PARIS.

2. BEES LIVE ON ITS ROOF.

>>6195600