Maltese architecture has been influenced by many different Mediterranean cultures and British architecture over its history. The first settlers on the island constructed Ġgantija, one of the oldest manmade freestanding structures in the world. The Neolithic temple builders 3800–2500 BC endowed the numerous temples of Malta and Gozo with intricate bas relief designs, including spirals evocative of the tree of life and animal portraits, designs painted in red ochre, ceramics and a vast collection of human form sculptures, particularly the Venus of Malta. These can be viewed at the temples themselves (most notably, the Hypogeum and Tarxien Temples), and at the National Museum of Archaeology in Valletta. Malta's temples such as Imnajdra are full of history and have a story behind them. Malta is currently undergoing several large-scale building projects, while areas such as the Valletta Waterfront and Tigné Point have been or are being renovated.