A lone cannonball remains lodged in the walls of the Hotel de Sens as a sober reminder of a revolution.

Twelve grave-faced marble angels guard the emperor's tomb at Les Invalides.

The narrowest street in Paris.

Site of a classic 19th-century physics experiment to prove the earth is rotating.

This bridge was constructed from the rubble of the infamous Bastille.

The spiral staircase hidden inside this giant Parisian column was likely built for Catherine de Medici's astrologer.

Executions were once held near this beautiful 18th-century fountain.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

A 16th-century fountain marks the site of a lost medieval cemetery once filled with mass graves.

This emotive sculpture was originally created for the 1878 World's Fair.

Medieval museum built over Roman baths that features famous tapestries of a lady and a unicorn.