3. Eiffel Tower, Paris, France
No trip to Paris is complete without a visit to the Eiffel Tower, but its global fame has caused it to become a hotspot for tourist congestion. Long lines to ascend, packed viewing platforms, and bustling crowds below make it challenging to enjoy the iconic Parisian landmark.
If you plan on visiting, try booking skip-the-line tickets to save time, or choose the less-crowded early morning or evening slots.