facade of the casa de correos in puerta del sol in madrid, spain.

landmark facade architecture building town tourism tower palace downtown city plaza house balcony government decorated flag lgtbi community celebration gay pride festival 2019 symbol transgender tolerance lgbtq community lesbian pride demonstration support lgbt homosexuality rainbow flag rights homosexual lgbt bisexual banner post office building balcony rainbow lgtbi madrid spain puerta del sol clock 2019 holiday history historical historic festival famous facade exterior event european europe detail culture cityscape city center celebration blue architecture ancient