Hospitality_Recreation

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In this May 13, 2017 photo, a tree stretches into the sky on the drive up Flagstaff Mountain in Boulder, Colo. Part of what makes Boulder's 45,000 acres of open space and parkland so spectacular is that it's so accessible. One minute, you're dining, shopping or walking on a city street; five minutes later, you're up in the mountains, surrounded by pine trees, looking down on the city below. (AP Photo/Beth J. Harpaz)

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This May 13, 2017 photo shows a bison sculpture on the Pearl Street Mall in Boulder, Colo. Pearl Street has been Boulder's main shopping district since the late 19th century and a pedestrian mall since the late 1970s. Today its historic storefronts have been restored and it bustles with shoppers, street performers and children at play. The bison sculpture is a temporary installation. (AP Photo/Beth J. Harpaz)

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This May 13, 2017 photo shows people relaxing along Boulder Creek in Boulder, Colo. The 8-mile Boulder Creek Path alongside the waterway is a scenic trail where you can stroll, bike or just sit for a few peaceful moments. (AP Photo/Beth J. Harpaz)

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Steve Goodley submerges into a pond at Heritage Hill Golf Resort to search for golf balls at Heritage Hill Golf Resort on Feb 23, 2017 in York, Pa. Each find represents a few cents of a potential six-figure income requiring intense preparation, endurance and significant hazards. (Jason Plotkin/York Daily Record via AP)

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Steve Goodley uses an inner tube to keep his airline close as he dives into the pond to search for golf balls at Heritage Hill Golf Resort on Thursday, Feb 23, 2017 in York, Pa. Each find represents a few cents of a potential six-figure income requiring intense preparation, endurance and significant hazards. (Jason Plotkin/York Daily Record via AP)

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Steve Goodley carries a bag of 1,000 golf balls out of the pond at Heritage Hill Golf Resort on Thursday, Feb 23, 2017. Goodley, a former amateur golfer, now makes a full time living diving for lost golf balls year round. (Jason Plotkin/York Daily Record via AP)

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A model freight train carries beverages to costumers in a restaurant in Prague, Czech Republic, Wednesday, April 19, 2017. In three Czech restaurants, model freight trains arrive at your table and stop right in front of you with your your order of drinks. The only thing you have to do is to pick up your glass before the train departs. It’s reasonably fast, efficient and fun. (AP Photo/Petr David Josek)

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Costumers take drinks from a model freight train in a restaurant in Prague, Czech Republic, Wednesday, April 19, 2017. In three Czech restaurants, model freight trains arrive at your table and stop right in front of you with your your order of drinks. The only thing you have to do is to pick up your glass before the train departs. It’s reasonably fast, efficient and fun. (AP Photo/Petr David Josek)

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A customer picks up her drink from a model freight train carrying beverages to costumers in a restaurant in Prague, Czech Republic, Wednesday, April 19, 2017. In three Czech restaurants, model freight trains arrive at your table and stop right in front of you with your your order of drinks. The only thing you have to do is to pick up your glass before the train departs. It’s reasonably fast, efficient and fun. (AP Photo/Petr David Josek)

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A youngster watches a model freight train carrying beverages to costumers in a restaurant in Prague, Czech Republic, Wednesday, April 19, 2017. In three Czech restaurants, model freight trains arrive at your table and stop right in front of you with your your order of drinks. The only thing you have to do is to pick up your glass before the train departs. It’s reasonably fast, efficient and fun. (AP Photo/Petr David Josek)

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Costumers take beers from a model freight train in a restaurant in Prague, Czech Republic, Wednesday, April 19, 2017. In three Czech restaurants, model freight trains arrive at your table and stop right in front of you with your your order of drinks. The only thing you have to do is to pick up your glass before the train departs. It’s reasonably fast, efficient and fun. (AP Photo/Petr David Josek)