Church of Santa Engracia converted into National Pantheon, Central crossing and nave polychromed marble patterns and pipe organ, Lisbon, Portugal

national pantheon santa engracia lisbon church architecture marble patterns pipe organ central crossing nave interior historic site religious building polychrome ornate design cultural heritage tourist attraction europe sightseeing monument art history craftsmanship monumental sanctuary columns vaulted ceiling light symmetry elegance decoration artistry visitor experience exploration beauty worship conservation restoration landmark