7. Get Spooked in the Catacombs
Get up early and head to the 14th arrondissement (Denfert Rochereau metro station) for an unusual yet memorable Parisian experience. Who can resist the chance to see a series of tunnels built on the collected remains of more than six million people? I know, it might sound like the most morbid vacation stop ever, but underneath the city of Paris is one of the most expansive testaments to history and human ingenuity ever recorded. Tours are lead through the catacombs on a daily basis in both English and French. Its sheer scope will haunt you.

8. Soak in Sacré-Cœur
Even if you’re not religious, Sacré-Cœur is worth the trip because it’s also the highest point in the city. The grand old domed basilica sits on a hilltop overlooking the rooftops of the entire crowded yet gorgeous city. When you’re moving through the city on and under the streets, it might be easy to forget just how massive Paris is. Sacré-Cœur will remind you. Time saving tip: don’t bother lining up for the funicular railway up to the basilica. Sure, it’s hilly and there are a lot of stairs, but it’s not too onerous and walking will save you precious time.

9. Meander Montmartre
Right by Sacré-Cœur in the 18th arrondissement is the artsy neighborhood of Montmartre. To be honest, it’s kind of a tourist trap of tacky souvenirs and caricaturists, but there’s still something atmospheric and historic about it that’s worth exploring. There are plenty of cafes and bistros to choose from here, so if the crowds get to you, take a load off and watch the world walk by.
