Built on the site of the former Citroën car manufacturing plant, the Parc André Citroën could be described as a modern park: think glass houses, dancing fountains, waterfalls, and gardens with computerized sounds. There is also an astounding elevated reflecting pool and several smaller gardens, each of which is designed around a specific color – blue, green, orange, red, silver and gold. What also makes the park so different is that you can ride its tethered hot air balloon to see some incredible panoramic views of the Champs de Mars, the Sacré Coeur, the Seine and Notre Dame.