In 1925 Jean-Claude Nicolas Forestier, the head of urban planning in Paris moved to Havana for five years to collaborate with architects and landscape designers. In the master planning of the city his aim was to create a harmonic balance between the classical built form and the tropical landscape. He embraced and connected the city's road networks while accentuating prominent landmarks. His influence has left a huge mark on Havana although many of his ideas were cut short by the great depression in 1929. During the first decades of the 20th century Havana expanded more rapidly than at any time during its history. Great wealth prompted architectural styles to be influenced from abroad. The peak of Neoclassicism came with the construction of the Vedado district (begun in 1859). This area features a number of set back well-proportioned buildings in the Neoclassical style