Chicago is known as one of the most beautiful cities in the world, due to its daring and historical architecture. Here are a few of its most popular buildings:

The Merchandise Mart, located at 350 North Wells, is the world’s largest commercial building and largest trade center in the world. Constructed in 1930 and encompassing 4.2 million square feet, the Mart spans two entire city blocks and rises 25 stories. It was designed by the Chicago architecture firm of Graham, Anderson, Probst and White, who envisioned it as a city within a city. The style of the building has a heavy Art Deco influence, and the interior is defined by two wide 650 feet long corridors known as business boulevards, which feature six and a half miles of display windows.

The Chicago Water Tower, located at 806 North Michigan Avenue, is the second-oldest water tower in the United States. Architect William W. Boyington built the tower in 1869 from yellowing Joliet limestone. The tower, which is 154 feet tall, contains a 138 foot pipe inside that was used for firefighting, as well as to control water surges in the area. After the Great Chicago Fire of 1871, the water tower was the only public building in the burned zone to survive, and is the only one of the surviving structures still standing.

One of America’s most famous office buildings, the Wrigley Building, located at 401-410 North Michigan, is known as the jewel of the Magnificent Mile. Its two towers are connected by an open walkway at street level and two enclosed walkways, and it is made of white terra-cotta cladding. The architecture firm of Graham, Anderson, Probst and White designed the Wrigley Building, which was patterned after the Seville Cathedral’s Giralda Tower in Spain. Ground was broken in 1920, in 1924 the north tower was completed and in 1931 a 14th floor walkway was put in place.

Marshall Field and Company Building, now known as Macy’s on State Street, was declared a National Historic Landmark and listed on the National Register of Historic Places in 1978, and was designated a Chicago Landmark in 2005. The 12 story granite building, located at 111 North State, was constructed in stages between 1892 and 1914, and is known for its multiple atria, a Tiffany & Co. mosaic ceiling and two outdoor clocks, which serve as symbols of the store.