What is the awesome place in Europe?
There are many, so, depending on your personal likes and interests; would note Sagrada Familia in Spain, Chartres, Mont-Saint-Michele, Salisbury Cathedral, Louvre, British Museum, Florence, Santorini, Prague, Swiss Alps. Versailles, Copenhagen, Danish Royal Gardens (and perhaps a side-trip to LegoLand :-) , Djurgarden, Geirangerfjord, and, as "Andrew" writes, Ireland.
Secret if I tell u you and everyone else will flock there and ruin it!!
Skara Brae in the Orkneys.