When construction began on the 515-foot-tall Frost Bank Tower less than two months after 9/11, it was questioned as financially reckless. When it was complete in 2004, critics said it was more Manhattan than Austin, that its blue glazing did not fit the pinks and russets of Downtown%u2019s stones and bricks. Now its four-peaked crown and azure glass exterior is a defining part of the city%u2019s skyline. 401 Congress, 473-4343 www.frostbank.com