There are several four star hotels in Michigan Avenue. One of the popular one is Hard Rock Hotel. The hotel boasts of maintaining excellent quality of service. The hotel is a forty storied building and the guests would be impressed with an atmosphere where there is perfect blending of art and hospitality. They are reached in the number 312 345 1000.

Congress Plaza Hotel which is in Michigan Avenue is reached in the number 1 312 427 3800. They have great amenities which include guest rooms, classic suites, function space and modern exercise facilities.

http://www.congressplazahotel.com/amenities.htm

http://www.kayak.com/ChicagoHotels.Congress_Plaza_Hotel_at_Grant_Park.31998.ksp

In the early stages, the structure of the buildings in Chicago was built around the mouth of the Chicago River. This was because, the built up area of the city is consistent with its natural flatness and its natural geography with having only slight differences.

The average land elevation of the city is 579 meters above the sea level. The lowest point in Chicago is 577 Square feet or 176 meters and the highest point is 735 feet.

http://www.chicagofed.org/webpages/banking/financial_institution_reports/structure_and_geographical_variables.cfm

http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6WJN-4D5W2SJ