The Costello Memorial Chapel, just across from the gates to Carrick-on-Shannon’s Market Yard, is said to be the smallest chapel in Europe and the 2nd smallest chapel in the world. And just like the Taj Mahal, it is a testament to a man’s love for his wife. In 1879, a wealthy merchant Edward Costello built it as a memorial to his wife Mary Josephine who died aged 46. The remains of Josephine (1889) and of Edward who died in 1891 are both interred in this beautiful memorial.