Marry at a castle on Monte Isola, the island in Lake Iseo

Two buildings meet at the courtyard. The lakeside wing is the old one: pale rubble stone, small windows, a pointed-arch portico and a vaulted hall at ground level. Behind it stands the ochre palazzo, seven arches below and a fourteen-arch loggia on top. Its halls keep their painted eighteenth-century ceilings. Inside, the restored rooms mix frescoes, oak beams and terracotta floors with pieces the owners brought home from their travels. Outside it's all olive trees and terracotta urns on the railing posts. On a wedding day, add pampas grass in green demijohns. Grand bones, worn lightly.

The Oldofredi, who ruled Iseo across the water, built two strongholds on the island. This one guarded Peschiera's southern edge. A notary signed a deed 'in the Oldofredi residence' here on 26 March 1488. A survey of 1610 still describes a high tower above many houses within the walls. The tower came down around 1870, by which time the castle had passed through the Tadini, Maraglio and Agnesi families. Each left its mark. Look for the Gothic fresco of the Madonna and Child on an outside wall at ground level; it's dated 1458.

Peschiera Maraglio is a fishing village stacked up the hillside below the castle. The parish church of San Michele shares a wall with it. Below the roofs, the ferry pier takes the Sulzano boats; across the water the shore climbs straight into wooded mountains. Olive groves run uphill behind the castle toward the sanctuary of the Madonna della Ceriola, 600 meters up at the island's crown. A 9 km road circles the island with no cars on it, only the island bus and mopeds. If you're weighing places to get married in Italy by the lakes, this one adds a boat to the day.

No cars are allowed on Monte Isola, so everyone arrives by boat. Guests leave the car at the Gerolo car park on Via Tassano in Sulzano, 300 meters from the pier. The public ferry crosses to Peschiera Maraglio in about five minutes, every 15 to 20 minutes, all year round. The castle can also reserve private boats for your party. From the pier it's a short climb through the lanes. There are also stone steps up from the lakefront on the castle's south side. Sulzano has its own railway station near the pier, 35 minutes from Brescia. Bergamo airport is about an hour from Sulzano; Verona, Milan Linate and Malpensa follow in that order.

Sixty beds sit inside the walls, in rooms and apartments spread across three buildings. Those are the medieval wing, the main palazzo and the old farmhouse facing the olive garden. Every one is different. The apartments sleep four or six, with a full kitchen, a double sofa bed and a hydromassage shower. Several keep their frescoes. Book all of it and the castle is yours: breakfast on the lake terrace with everyone the next morning. Weekends need two nights for exclusive use; Monday to Thursday one is enough. Check-in is from 3 pm, check-out by 10 am, and pets stay home.

The castle is one of the official wedding venues of the Comune di Monte Isola. So the civil rite happens here, not in an office in Siviano. The spot is the Arena, the lawn at the lake railing: a wooden table, two chairs, terracotta urns on the posts. That's where Emma and Evan said their vows one September with five guests. If it rains, the medieval wing's vaulted hall and lake-view portico take the ceremony instead. The town hall wants the castle booked three months ahead. Eleonora, our wedding planner in Italy, files that request and assists with the Nulla Osta paperwork. A blessing in the olive garden suits couples who've done the legal part at home.

Three outdoor rooms step down the hill. The terrace outside the restaurant has cream parasols over terracotta tiles. With the lawn beside it, it holds 100 to 150, and the aperitivo usually lands here. The Arena lawn below is for the ceremony. For a small group it's also dinner at one long table, while the sun drops behind the mountains across the water. The olive grove is the informal option: string lights between the trees and long tables on the grass. The bell tower of San Michele is lit behind them. The pool sits further out among the olives with its own view of the lake.

Dinner indoors means the frescoed dining hall: painted ceiling, chandeliers and tall windows over the lake. It seats up to 110 at long imperial tables. The smaller Sala Camino next door, with its fireplace, takes the overflow when the group grows. The kitchen's own pastry section makes the wedding cake, or you bring one in with no surcharge. A dessert buffet follows either way. The terrace does lunch weddings as well as dinners. The castle takes one wedding a day, so nobody else's party is on the lawn when yours is.

The restaurant is the castle's own: lake fish and Brescian dishes with a modern hand. Its brigade writes the menu with you. The usual shape is an aperitivo on the terrace, antipasto and a first course or two. Then a choice of two mains, the dessert buffet and the cake. Vegetarian, vegan and gluten-free menus are routine. The bar is open from 10 in the morning to 10 at night. After dinner an open bar is arranged by the hour or by consumption. You can bring your own caterer and hire the spaces alone if you'd rather; the kitchen is open to them.

Music and dancing are part of the day here, with one rule that shapes the evening. Outside, the band or DJ plays until midnight. After that the party moves indoors to the dance hall and runs until 1:30, which the castle allows when every room is yours. Before midnight the olive grove under its string lights is the dance floor most couples pick. The castle has no exclusive band, DJ or photographer, so the people you choose are welcome.

Everything stays on the island. Welcome drinks under the medieval portico the evening before, then the wedding day across lawn, terrace and hall. Booking every bed brings the breakfast after: coffee on the lake terrace with the people who stayed. A boat trip around the island fills the afternoon between. The Franciacorta cellars are a short hop back on the mainland. Our Italian wedding packages can be built around a stay like this, ferry crossings and town hall timings included.

Lake Iseo has its own squall, the sarneghera, which can blow up in an afternoon. So the castle keeps a dry plan for every part of the day. The ceremony moves to the vaulted hall in the medieval wing, the aperitivo under the portico, dinner into the frescoed hall for 110. On hot days the terrace parasols shade the lunch tables and the rooms have air conditioning. The pool is seasonal, so a spring or autumn wedding may find it closed.