Pontoon bridge a pontoon bridge to cross the Bosphorus and Emperor Caligula built a bridge at Baiae in 37 AD. For Emperor Darius I The Great of Persia (522–485 BC), the Greek Mandrocles of Samos once engineered a pontoon bridge that stretched across the Bosporus, linking Asia to Europe, so that Darius could pursue the fleeing Scythians as well as move his army into position in the Balkans to overwhelm Macedon. Other spectacular pontoon bridges were Xerxes' Pontoon Bridges across the Hellespont by Xerxes I in 480 BC to transport his huge army into Europe: According to John Hale's "Lords of the
Pontoon (card game) Gold Coast, it is known as Jupiters 21, in the Reef Casino, Cairns, it is known as Paradise Pontoon, and in Tasmania, it is known as Federal Pontoon. The British blackjack variant called pontoon is played in the UK and Commonwealth with single 52-card decks. British pontoon uses the terms "twist" (hit), "stick" (stand) and "buy" (double the bet, not to be confused with doubling down) and a different set of rules. The rules for buying in pontoon include allowing the player to buy on any hand of 2 to 4 cards, allowing the player to twist after he buys.