BALTIMORE -- Lego City, the masterpiece of an overactive teen-ager, has a permanent home, in a museum no less.

The four-foot by eight-foot building block metropolis found a home at the Baltimore Public Works Museum after a three-year odyssey.

"For a couple summers I was trying to find a home for it," said Marc Kolodner, a Baltimore native who spent six years during middle school and high school building Lego City out of the brand name building blocks.

It features a miniature hotel with furnished rooms, an airport, a cruise ship, gas station, police station and a working drawbridge. The display also contains a construction site, houses and a hospital.

After searching for three years for a home for his work, Kolodner was directed to the museum by the mayor's office, which he had called for advice. The museum agreed this summer to display his creation, which went on exhibit Sunday.

Kolodner said he was introduced to the blocks by his mother, Phyllis Kolodner, shortly after she had encouraged him to take up tennis.

"He was a hyper little kid; he just couldn't sit still," Phyllis Kolodner said. "I had to find somewhere to channel that energy, so first I put him on the tennis court, and then I gave him Legos."

Kolodner said his parents and relatives gave him the building blocks for birthdays, Hanukah and as rewards for good grades. He doesn't know how many pieces his city contains.

About three quarters of the city was assembled according to kit instructions; the rest Kolodner created himself, he said.

A first-year graduate student in physics at Georgia Institute of Technology in Atlanta, Kolodner said his city was too big for his family's apartment. Schools, libraries and hospitals said they couldn't handle its size, either.

Lego City was on display more than two years ago at a Baltimore toy store while Kolodner was an undergraduate at Tulane University in New Orleans. But the store had to return it after about six months because it took up too much space.

The city was stored in giant pieces in his family's apartment until this summer, when Kolodner reconstructed it in the museum.