The lunar crater Alphonsus is about 3.9 billion years old. It is still clearly visible on the Moon's surface. The rim, ejecta, and floor of the crater are all clear. Though it is older than any crater found on Earth it's features are still intact and quite visible.
Wolfe Creek Crater
Location: North Central Australia
Diameter: 0.9 km
age: 300,000 years
Roter Kamm Crater
Location: Namibia
Diameter: 2.5 km
age: 3,700,000 years
Manicouagan Crater
Location: Quebec, Canada
Diameter: 70 km
age: 212,000,000 years