American Express has a Magnificent Mile address for one of its two Chicago service offices. Fidelity Investments has an office at the foot of The Magnificent Mile. Chicago landmarks Historic and landmark presences are shown in the table below, which lists Chicago Landmarks, National Register of Historic Places locations, and National Historic Landmarks along The Magnificent Mile. At the northern edge of this district on the west, one finds the exclusive One Magnificent Mile building and Oak Street running to the west. Also, at the northern edge of the district one finds the Chicago Landmark East Lake Shore Drive District, an extremely expensive and exclusive one-block area of real estate running east from N. Michigan Ave. and facing directly onto Lake Michigan. At the southern edge of the district, the Michigan Avenue Bridge sits among four majestic 1920s skyscrapers, two of which are on The Magnificent Mile (Tribune Tower and the Wrigley Building), and two of which are not (333 North Michigan and London Guarantee Building). These buildings are contributing properties to the Michigan–Wacker Historic District. Several of the tallest buildings in the world are located in The Magnificent Mile district. These buildings are: Malls Seasonal events With each season, the ambiance of The Magnificent Mile changes. This change is signaled by several official events: Median planters were constructed as part of a streetscape improvement project in 1994. In the spring, hundreds of thousands of tulips bloom from mid April until the end of May. In 2008, a public art installation of kinetic sculptures designed by local and international architects was placed in the garden beds. During the summer, the "Gardens of The Magnificent Mile" festival event occurs. It is a self-guided landscape display walking tour. In 2007 and 2008, fashion dress forms graced the garden beds. The forms were designed by students from the Illinois Institute of Art – Chicago and the International Academy of Design and Technology, as well as prominent designers located on the Avenue. In 2009 and 2010 the first ever Summer Concert Series presented by Walgreens brought top level musical talent to the Avenue for free lunchtime shows for guests, locals, and employees of the Avenue. Past artists include: Collective Soul, Better Than Ezra, Mat Kearney, Michael Franti, Kris Allen, and Guster. The tradition of lighting the trees of The Magnificent Mile to start the Christmas season extends more than forty years. More than one