High on the right side, a small area with beautiful pillars.

The south tower of the church of Saint-Sulpice, 68m high, was never completed. It's just if a staircase leads to the top of it.

An ocher underground quarry, with a high ceiling.

At the very top of the new tower called First, 230m high

The great market (bon marché) is emblematic of all famous stores in Paris. Established in 1838, it wont last to be the first big store, a new commercial concept where the selling volume prevail over gross margin. The LVMH consortium bought the great market in 1984 and started to make agressive ads, coupled to a new commercial target: High luxury.

When the same consortium bought the Samaritaine, the intention wasn't the same...

note: Emile Zola, a famous french writer inspired from this universe to write "Au bonheur des dames".

The EDF tower of Cergy Pontoise was built in 1974 by the architects Renzo Moro and Guy Lagneau. It is the tallest building in the Val d'Oise. It is 86m high and 14 floors. From innovative design, is one of the first buildings in France to have a structure irrigated. The building is constructed with water-filled tubes which protects it in case of fire.

source: Wikipedia

Quarries of Herblay are over 14km wide and some hundreds of meters deep, on hillsides along the Seine.

In 1776, the exploitation of new underground quarries in Paris was forbidden. People had to take the stone elsewhere. It is for this reason that the quarry was known as "Imperial quarry" or "Quarry of the city of Paris". They built many monuments in Paris with this stone because it was high quality (the famous Royal stone).

Among the monuments built, there was The Pantheon of Paris, Department of Marine Place de la Concorde, the Gare de l'Est, the mint as well as many statues at Versailles.

The network's quarries has been excessively exploited in Herblay. The ceiling is fragile and the walls separating the tunnels are very thin. To reinforce the quarry, they have added many pillars and reinforcement structures.

Later, like many underground quarries, they served to mushroom plantation in the 1980s. The workers have dug additional corridors between small quarries networks.

A few years later and they were gradually abandoned. The latest mushroom plantation closed in 1995.

Since 2003, the association "Herblay heritage" has undertaken to make public visits to the part of the "English entry" with the famous double-arched vault and pretty ponds.

The Church of St. Augustine (Paris) has been built under the direction of Victor Baltard between 1860 and 1871. The land for the building is small, so they used a metal structure for the building. The advantage of this kind of construction is the absence of flying buttresses. That was the first time a great building was built with a metal structure. The land also not having a rectangular shape, wich is why the church is trapezoidal, with a narrow face and a much larger chorus. It measures about 100m long and rises to 80m high.

The cathedral of the quarry Meudon Brimborion. This is the highest roof of the quarry, approx 18 meters high.

The great dome of the Hôtel-Dieu de Lyon, also known as dome Soufflot. It is 31m high. In the old days, his role was to serve as a ventilation shaft for the patients' rooms.