Opened in 1879, the neo-Gothic cathedral spans the length of an entire city block and features 330-foot spires. Its interior is just as impressive thanks to its numerous altars, stained-glass windows, ...
Fees start at 60 euros (about $66) for tour-takers 12 and older and 35 euros (about $38) for children ages 3 to 11. Tours depart daily, though departure times vary – they can leave as early as 8 a.m.