The Corlea Trackway Visitor Centre interprets an Iron Age bog road which was built in the year 148BC across the boglands close to the River Shannon. The oak road is the largest of its kind to have been uncovered in Europe and was excavated over the years by Professor Barry Raferty of University College Dublin. Inside the building, an 18-metre stretch of preserved road is on permanent display in a specially designed hall with humidifiers to protect the ancient wood.