Shortly after it was founded in 1699, the Convent of St. Clare grew to be a rather elaborate complex housing nearly 50 nuns. When it was destroyed by an earthquake in 1717, the sisters quickly rebuilt it. It was struck by violent tremors again in 1773, and the site was finally abandoned. The remaining arches and courtyards make a pleasant place to roam. Keep an eye out for hidden passages and underground rooms. Across the street is Parque La Unión, where, interestingly, you'll see several public washbasins where women do laundry.
2 Av. Sur at 6 Calle Oriente, Antigua, 03001, Guatemala