The Klever Tor or Clever Tor was a city gate of Wesel on the Lower Rhine from 1700 to 1891. It was in the immediate vicinity of today's town hall, which has the address Klever-Tor-Platz 1. The preserved frieze of the gate is placed a few meters from the historical site.
...
The Clever Gate was built in 1700 and replaced the previously demolished stone gate that had been built at the end of the 14th century as part of the city fortifications. The newly built city gate, named after the Lower Rhine town of Kleve, had three passageways and a relief or frieze depicting Frederick III in the gable. The creator of this work of art, also completed in 1700, is unknown; the client was King Friedrich III depicted in the painting. The gable with the frieze was eight meters high. In the 18th century, the city gates served to designate the settlements in front of them that belonged to the city. A part of today's Feldmark was designated "in front of the Klever Tor". In the 18th and 19th centuries, Wesel was a fortified town under Prussian rule, which only changed with a softening process from 1886 onwards. In this context, the demolition of the city gates began in 1889, with the exception of the Berlin Gate. Klever Tor was demolished in 1891, but the gable frieze facing the city and three distinctive arched keystones were preserved.
Source: Wikipedia