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In page Erfurt:

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Erfurt's cityscape features a medieval core of narrow, curved alleys in the centre surrounded by a belt of Gründerzeit architecture, created between 1873 and 1914. In 1873, the city's fortifications were demolished and it became possible to build houses in the area in front of the former city walls. In the following years, Erfurt saw a construction boom. In the northern area (districts Andreasvorstadt, Johannesvorstadt and Ilversgehofen) tenements for the factory workers were built whilst the eastern area (Krämpfervorstadt and Daberstedt) featured apartments for white-collar workers and clerks and the southwestern part (Löbervorstadt and Brühlervorstadt) with its beautiful valley landscape saw the construction of villas and mansions of rich factory owners and notables.[citation needed]