Indianapolis Catacombs

Tomlinson Hall was a public meeting hall in Indianapolis, Indiana, on the northeast corner of Market and Delaware streets adjacent to the Indianapolis City Market. It hosted a variety of public events from 1886 until January 30, 1958, when it was destroyed in a fire. The building was named for Stephen D. Tomlinson, an Indianapolis druggist, whose will had bequeathed the money to build it.

Delaware Flats is a historic apartment building located at Indianapolis, Indiana. It was built in 1887, and is a three-story, ten bay wide, Classical Revival style painted brick and limestone building. The first floor has commercial storefronts with cast iron framing. The upper stories feature two-story blank arches with Corinthian order pilasters.: Part 1, p. 29–30 It was listed on the National Register of Historic Places in 1983. It is located in the Washington Street-Monument Circle Historic District.

The Indianapolis City Market is a historic public market located in Indianapolis, Indiana. It was founded in 1821 and officially opened in its current facility in 1886. The market building is a one-story, rectangular brick building trimmed in limestone. It has a front gable center section flanked by square towers. While it was originally a farmers market, it is now a food hall. The Indianapolis City Market also hosted some events for Super Bowl XLVI in Indianapolis. The market was listed on the National Register of Historic Places in 1974.On June 15, 2022, the city of Indianapolis announced plans to replace the east wing of the market that had been added in the 1980s with an 11-story, 60-unit apartment building that includes 8,000 square feet (740 m2) of office space and 22,000 square feet (2,000 m2) of retail space. The $175 million project will also include converting the office building at 151 N. Delaware Street into a 350-unit multi-family housing tower and would result in the block having the highest population density in the state of Indiana.

Fidelity Trust Building is a historic bank building located in Indianapolis, Indiana. It was built in 1914–1915, and is an eight-story rectangular Classical Revival style building faced in white glazed brick and terra cotta. It measures 39 feet (12 m) wide by 110 feet (34 m) deep. At the time of its listing, the building housed J. Pierpont's Restaurant and Bar.: 2–5 It was listed on the National Register of Historic Places in 1980. and is located in the Washington Street-Monument Circle Historic District.

Market Square Center is a high-rise building in Indianapolis, Indiana, United States. It was completed in 1975 and has 20 floors. It is primarily used for office space. It is best known for its unique gold reflective glass facade and is popularly nicknamed the "Gold Building".

The City–County Building is a 28-story building at 200 East Washington Street in downtown Indianapolis, Indiana, that houses the offices of the consolidated city-county government of Indianapolis and Marion County, Indiana, known as Unigov.

Untitled (Urban Wall) is an outdoor mural by Austrian artist Roland Hobart located at 32 North Delaware Street in downtown Indianapolis, Indiana. The mural originally occupied two exterior walls of two four-story commercial buildings at this site. The mural was commissioned by the City of Indianapolis for the Indianapolis Urban Walls Project in 1973. Fabrication of the mural began in September 1973 and finished by the end of the year.

BMO Plaza, formerly the M&I Plaza, is a high-rise office building located at 135 North Pennsylvania Street in Indianapolis, Indiana. It was completed in 1988 and is currently the sixth-tallest building in the city, at 401 ft (122 m) with 31 stories. It is primarily used for office space. At 432,300 square feet (40,160 m2), BMO Plaza is the ninth-largest office building downtown, according to IBJ statistics. Tenants include BMO Harris Bank, U.S. Department of Defense, and General Electric Capital Services.

Regions Tower, also known as One Indiana Square, is a 36-story building at 211 North Pennsylvania Street in downtown Indianapolis, Indiana, United States. It is used by various companies for offices. The building opened in 1970 as the headquarters of Indiana National Bank. The building now serves as the Indiana headquarters for Regions Financial Corporation. The building also carries the Regions name and logo. The tower rises from a multi-story base and covers the southern half of the block bounded by Pennsylvania, New York, Delaware, and Ohio streets. The façade is covered by dark-tinted glass beneath the tower and recessed to allow a covered promenade on the west and portions of the north and south sides. The promenade roof is supported by marble-clad square columns on its exterior. The eastern portion of the base houses a parking garage. Original plans called for two additional towers on the northern half of the block, one of twenty stories in the northeast corner and one of twelve stories in the northwest corner, but neither was constructed. The first block of Massachusetts Avenue originally ran diagonally through the block, but was vacated for the project. The Knights of Pythias Building, a flatiron-shaped building at the corner of Massachusetts and Pennsylvania, was among those demolished to allow for the building's construction.In the mid- to late-1990s, building owners installed a new façade and exterior lighting after weather damage to the building in 1978, 1980, and 1990. The building underwent another exterior remodeling after damage by tornado-strength winds on April 2, 2006. Owners of One Indiana Square have invested in new LED lighting system. The latest facade is a light blue curtain wall, by Gensler of San Francisco, that is largely transparent.

Old Indianapolis City Hall, formerly known as the Indiana State Museum, is a historic city hall located at Indianapolis, Indiana. It was built in 1909–1910, and is a four-story, Classical Revival style brick building sheathed in Indiana limestone. It measures 188 by 133 feet (57 by 41 m).: 2–4 It was listed on the National Register of Historic Places in 1974.

The Consolidated Building is a 15-story building at 115 North Pennsylvania Street in downtown Indianapolis, Indiana. It was constructed as an annex to the neighboring Lemcke Building and was known as the Lemcke Annex. For a number of years the building housed the headquarters of the Consolidated Insurance Company. From about 1995 it sat mostly vacant because the owner ran into financial difficulties.In 2014 the building was sold and renovation to apartments was begun. In May 2015 the building reopened as the Penn Street Tower, with 98 apartments on 14 floors. The first floor will be used for retail and office space. The total cost of the acquisition and renovation was about $14 million.

Market Square Arena was an indoor arena in Indianapolis. Completed in 1974, at a cost of $23 million, it seated 16,530 for basketball and 15,993 for ice hockey. Seating capacity for concerts and other events was adjusted by the use of large curtains which sealed off the upper rows. The arena closed down in 1999 and was demolished two years later.