"Whilst there are a great number of perspectives that can be taken on the subject, it is impossible to form a single, all-embracing concept of European culture."

Literally the second sentence in that wiki

Do you frequently stop reading articles two sentences in? It's amazing how much knowledge and intelligence you must be missing.

Please do keep reading past. The next sentence (literally sentence #3) gives you: Nonetheless, there are core elements which are generally agreed upon as forming the cultural foundation of modern Europe. One list of these elements given by K. Bochmann includes:

And then a detailed list of shared-culture-related items.

- A common cultural and spiritual heritage derived from Greco-Roman antiquity, Christianity, Judaism, the Renaissance, its Humanism, the political thinking of the Enlightenment, the French Revolution, and the developments of Modernity, including all types of socialism;[5][4]

- A rich and dynamic material culture, parts of which have been extended to the other continents as the result of industrialization and colonialism during the "Great Divergence";[5]

- A specific conception of the individual expressed by the existence of, and respect for, a legality that guarantees human rights and the liberty of the individual;[5]

- A plurality of states with different political orders, which share new ideas with one another.[5]

- Respect for peoples, states, and nations outside Europe.

And then there are 15 categories from Music to Science to History, listing cultural similitudes or shared values.