Particularly noteworthy are historic specimens dating to the arboretum's creation, including tulip trees planted in 1779, oaks (1790), and yellow buckeye (1799).

A group of scientists discover biologic specimens dating back to the first Ice Age.

The Kinglet Calyptura is a bird from South American and known only from specimens dating back to the 19th Century.

Fossil specimens dating back 360 million years to the Devonian period were first discovered in Greenland 70 years ago, and until the mid-1980's Ichthyostega was the earliest known tetrapod.

The museum boasts some fine specimens of Nok terracotta heads and artifacts dating from between 500 BC to 200 AD.

It was especially common between the 7th and 5th centuries BC, although there are specimens dating as late as the 2nd century BC.

The museum's collections have grown considerably since then and now also include important botanical specimens dating back over 200 years, which represent most of Britain and Ireland's native flora.

The arboretum also contains a major herbarium of more than 350,000 specimens dating from the 19th and 20th centuries.

It is known from rocks dating to the Paleocene epoch from western Africa, and specimens dating back to the Maastrichtian era were identified in 2008.

Agen Cathedral was formerly the church of St. Caprasius, and is a splendid specimen of Romance architecture, dating from the twelfth and thirteenth centuries.