It is Paulownia tomentosa.....common name Empress tree.
http://i.imgur.com/RI7kx.jpg
Inside the pod are lots of seeds...See.
https://commons.wikimedia.org/...
https://oregonstate.edu/dept/l...
https://www.google.co.uk/searc...
Quote link below....
"Fruit: Brown, woody, beaked, ovoid capsules are 4 cm (1.5 in) long, borne in terminal clusters. The seed pod has four compartments that contain as many as 2,000 tiny winged seeds. The capsules mature in autumn, open to release the seeds and then remain attached all winter. One tree is capable of producing twenty million seeds that are easily transported in water or wind. "
https://www.se-eppc.org/manual...