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Opening days in Constanţa: what's closed on Monday and what's open every day

Showing up at a closed door is the classic trip-ruiner. Of the 6 top attractions in Constanţa with known opening hours, 2 close on Monday. Pick a day to see what's open and what's closed.

Pick a day

Monday in Constanţa

2 closed · 4 open

Closed on Monday

Open on Monday

Closed-day plan B

Walking tours and day trips run every day of the week, museums or not. The easiest way to fill a day when the big sights are shut.

Walking tours in Constanţa, Romania

Opening days at a glance

Local time, 24-hour clock. Tap a sight for details and tickets.

MonTueWedThuFriSatSun
Constanța Casino✕10–2010–2010–2010–2010–2010–20
Roman Mosaics Building✕✕9–179–179–179–179–17
Ovidiu Square24h24h24h24h24h24h24h
Great Mahmudiye Mosque10–2110–2110–2110–2110–2110–2110–21
Mamaia Beach7–197–197–197–197–197–197–19
The Dolphinarium9:30–169:30–169:30–169:30–169:30–169:30–169:30–16

Open late in Constanţa

Sights still open after 20:00 — good for warm evenings and busy days.

Frequently asked questions

Are museums and attractions in Constanţa closed on Monday?
Some are. 2 of the 6 top sights in Constanţa with known hours close on Monday: Constanța Casino, Roman Mosaics Building. The other 4 are open.
What is open on Sunday in Constanţa?
On Sunday, 6 of the 6 top sights in Constanţa are open: Constanța Casino, Roman Mosaics Building, Ovidiu Square, Great Mahmudiye Mosque, Mamaia Beach, The Dolphinarium.
Which attractions in Constanţa are open every day?
4 top sights in Constanţa are open all seven days: Ovidiu Square, Great Mahmudiye Mosque, Mamaia Beach, The Dolphinarium.
Which sights in Constanţa are open late?
Ovidiu Square, Great Mahmudiye Mosque stay open until 20:00 or later on some days.

Opening days from Google Maps (checked 2026-07-11). Public holidays, strikes and seasonal hours can differ — check the official website before you go. Times are local (Europe/Bucharest).

All things to do in Constanţa