[1] An archaeological testament to the prehistoric occupation of the area was made when rich Celtic graves were discovered on the west edge of the village in 1959.
[4] By 2024, construction is planned to begin on Wallauer Spange, a railway link connecting the two existing rails from Wiesbaden and Frankfurt going north.
Also, the plans include building a station where the rails pass Wallau near the L 3019 road south of the village.
[5] In the east of Wallau, on the other side of A3 motorway, there is a business park, where numerous companies and some supermarkets are based.
In the south, near the motorway exit, IKEA operates a store also serving as headquarters of the company in Germany.