Like the keystone of a bustling bridge, the corner spot of any neighborhood shopping district is the most important piece, and Mondo Vino has held up well at the intersection of 32nd Avenue and Lowell Boulevard since 1999, when sommelier Duey Kratzer opened for business. The elegant liquor store was one of the first of a new wave of shops and restaurants to revitalize Highland Square, and it has attracted throngs of customers with an upscale but accessible selection of beer, wine and spirits, and a staff that recognizes faces and is quick with a suggestion. Stop in for a bottle of something; you'll leave with two.