Panama City is growing — fast. Commercial and residential towers continue to sprout 50 to 70 stories high, reshaping the city’s famed skyline. --The BioMuseo, designed by Frank Gehry, celebrates this country's biodiversity. --The first rapid transit system in Central America alleviates some traffic congestion. --The Panama Canal expansion can be viewed from an observation center near the Atlantic. --Ace Hotel's American Trade Hotel brings buzz - and more jazz - to Casco Viejo. --A new walkway along Panama City's waterfront is the first step to making the city a little more pedestrian friendly.