A massive church which boasts of over 70 chapels and oratories, the Basilica of the National Shrine of the Immaculate Conception is the tallest building in Washington, D.C. It is also one of the ten largest churches in the world. Millions of pilgrims and tourists have visited this church to admire the exquisite Byzantine-Romanesque architecture and beautiful mosaics.

Moreover, the Basilica houses the biggest collection of contemporary ecclesiastical art in the world and it has proven to be a huge crowd-puller. Be wonder-struck by its splendid interior which was inspired by Greek architecture, with its domes embellished with amazing mosaics and look out for the arches with shimmery Pewabic tiles. The highlight of the church is Mary memorial altar in one the crypts, made entirely out of translucent golden Algerian onyx. A stunning sight for the eyes!