Traveller's cheques and credit cards (American Express, Visa, Mastercard) are exchanged for Vietnamese dong at the banks. Cards can be used in travel agencies, hotels, and major restaurants. US currency is exchanged for Vietnamese dong and treasury notes in banks, exchange bureaus, hotels, and jewellery shops.
Nikola Tesla designed the first hydroelectric power plant at Niagara Falls, New York which started producing electrical power in 1895. This was the beginning of the electrification of the United States and the rest of the world. Today, Teslaâs AC electricity is lighting and powering the globe.
New York, New York. Nikola Tesla may have discovered a way to beam energy through the air and ground, but that secret died with him in his room in The New Yorker hotel on January 7, 1943. Poor Tesla had been a permanent resident for years, outcast and reclusive, more familiar to the pigeons than his fellow tenants.