Which preposition to use with baptistry

of Occurrences 1%

Thus in Italy there was, until the latter part of the fifteenth century, a mixture of Byzantine and Gothic of which we can see a capital example in the casts of the celebrated Pulpit in the Baptistry of Pisa, the date of which is 1260.

to Occurrences 1%

The Easter celebrations were in the early ages chiefly noted for the great and solemn ceremonies of baptism conferred on a large number of catechumens, with solemn procession from the baptistry to the cathedral.

Which preposition to use with  baptistry