HOUSE OF CARDS: Man creating large-scale buildings out of playing cards at Baltimore casino

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He is building houses of cards -- literally.

Bryan Berg calls himself a professional cardstacker. He is spending his time these days at the Horseshoe Casino in Baltimore creating a series of buildings out of playing cards without any use of glue or tape.

Some of the structures he is building are the U.S. Capitol, the Washington Monument, the Jefferson Memorial, the Lincoln Memorial and the White House.

"This project is going to take at least 1,500 packs of cards," said Berg. "If I put all of those cards end to end to end, they would stretch about four and a half miles. Collectively, they weigh a little more than 200 pounds."

He holds the Guinness World Records for the tallest house of cards since 1992. It was 26 feet tall and took 1,060 decks of playing cards.

"There are people that think this is the most amazing, beautiful thing they have ever seen, and there are other people who think it's the most epic waste of time they have ever seen in their life," Berg told us.

Berg has a structural engineering background and has been trained as an architect with degrees earned from Iowa State University and Harvard University. It comes in handy when building these card structures.

"All that structural geometry and all those of pounds of cards creates something that is much stronger than you would ever imagine," he said.

He was introduced to cardstacking by his grandfather, who was a card player.

"To me, the main thing it shows is that anything is possible if you mess around with something enough," said Berg. "You'll eventually figure it out."