Detail of the Papal Altar and Baldacchino, located in the central part of St. Peter's Basilica in Vatican City, UNESCO World Heritage Site, papal enclave in Rome, Lazio, Italy, Europe

Architectural detail of St. Peter's Basilica, featuring the iconic Vatican obelisk at its center, Vatican City, UNESCO World Heritage Site, papal enclave in Rome, Lazio, Italy, Europe

Church of San Francesco d'Assisi, Sassi di Matera, UNESCO World Heritage Site, Basilicata, Italy, Europe

Rambagh Palace Hotel, Jaipur, Rajasthan, India, South Asia, Asia

Detail of the Tomb of Pius XI, located within the Vatican Grottoes beneath St. Peter's Basilica in Vatican City, UNESCO World Heritage Site, papal enclave in Rome, Lazio, Italy, Europe

Detail of the Blessed Sacrament Chapel Dome, located within St. Peter's Basilica in Vatican City, UNESCO World Heritage Site, papal enclave in Rome, Lazio, Italy, Europe

Detail of the Baptismal Chapel Dome, located within Saint Peter's Basilica in Vatican City, the papal enclave in Rome, UNESCO World Heritage Site, Rome, Lazio, Italy, Europe

Spendid entrance hall, Reggia di Caserta (Royal Palace of Caserta), UNESCO World Heritage Site, Campania, Italy, Europe

White marble pillars and ceiling at The Ranakpur Jain Temple at Desuri Tehsil in Pali District of Rajasthan, Western India

Dome of central hall ceiling detail at The Ranakpur Jain Temple at Desuri Tehsil in Pali District of Rajasthan, Western India

White marble pillars and ceiling at The Ranakpur Jain Temple at Desuri Tehsil in Pali District of Rajasthan, Western India

Visitors, Pergamon Museum, the Pergamon temple, antique collection, mural, museum island, the State Museums of Berlin, Prussian Cultural Heritage Foundation, Berlin, Germany

Staircase, Capitol, architect Elijah E. Myers, 200 East Colfax Avenue, Denver, Colorado, USA, North

Gallery of the presidents of the USA, Capitol, architect Elijah E. Myers, 200 East Colfax Avenue, Denver, Colorado, USA, North

Gallery of the presidents of the USA, Capitol, architect Elijah E. Myers, 200 East Colfax Avenue, Denver, Colorado, USA, North

Interior view, Capitol Building, Havana, Cuba, Greater Antilles, Caribbean