A number of architectural styles are represented in spite of Gammeltorv's small size and harmonic character.
No.
14, 16 and 18 on the square's north side and No.
20 and No.
22 on its west side all date from the years 1795–1801 but none of the architects are known.
The more monumental of the three houses is the Bachmann House at No.
18.
The facade is decorated with Ionic order pilasters and is tipped by a triangular pediment.
The Suhr House at No.
22 is also decorated with Ionic order pilasters.

The building on the corner with Frederiksborggade (Gammel Torv 24/Frederiksberggade 2) is from 1899 and was designed by Johan Schrøder.
The building at the corner with Nygade (Gammel Torv 2/Nygade 6), on the other side of the square, is from 1898 and was designed by Aage Langeland-Mathiesen in a style inspired by Renaissance architecture.
The neighbouring building (No.
4), with arched windows and rustication on the lower floors, was designed by Frederik Levy and is also from 1898.

The Neo-Baroque property on the corner of Nørregade (Gammel Torv 8/Nørregade 1) is called Alexandrahus and was built in 1906 to design by Ulrik Plesner.

Arne Jacobsen's Stelling House on the corner of Skindergade is an early example of Functionalist architecture.
A number of architectural styles are represented in spite of Gammeltorv's small size and harmonic character. No. 14, 16 and 18 on the square's north side and No. 20 and No. 22 on its west side all date from the years 1795–1801 but none of the architects are known. The more monumental of the three houses is the Bachmann House at No. 18. The facade is decorated with Ionic order pilasters and is tipped by a triangular pediment. The Suhr House at No. 22 is also decorated with Ionic order pilasters.
The building on the corner with Frederiksborggade (Gammel Torv 24/Frederiksberggade 2) is from 1899 and was designed by Johan Schrøder. The building at the corner with Nygade (Gammel Torv 2/Nygade 6), on the other side of the square, is from 1898 and was designed by Aage Langeland-Mathiesen in a style inspired by Renaissance architecture. The neighbouring building (No. 4), with arched windows and rustication on the lower floors, was designed by Frederik Levy and is also from 1898.
The Neo-Baroque property on the corner of Nørregade (Gammel Torv 8/Nørregade 1) is called Alexandrahus and was built in 1906 to design by Ulrik Plesner.
Arne Jacobsen's Stelling House on the corner of Skindergade is an early example of Functionalist architecture.
Gammeltorv