The Ameisenhaus (ant house) is a sculpture by Christoph Knöll on Rheingasse that was originally intended to have ants on the ground. It was installed vertically in 1999 in response to a fish sculpture on the Hotel Merian, located opposite.

| Date created | 1999-11-01T11:00:00.000Z |
|---|---|
| Camera used | Apple iPhone SE (3rd generation) |
| Marker type | artwork |
| City | Basel |
| Country | Switzerland |